A magician pulls one thing after another out of his hat. How could that little hat contain so many things?!
We're going to do something similar, by pulling the entire alphabet out of a word.
Start with a word.
The word should contain (at least one) "A". Pull the "A" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "B". Pull the "B" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "C". Pull the "C" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "D". Pull the "D" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "E". Pull the "E" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "F". Pull the "F" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "G". Pull the "G" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "H". Pull the "H" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
The audience is going wild! Give the illusion of picking up the pace in the next step:
If you've played it correctly, the word at this point should contain both an "I" and a "J". Pull both the "I" and the "J" out of the word at the same time, show them to the audience with dramatic flourish, and toss them away. Quietly replace them with TWO new letters of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "K". Pull the "K" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "L". Pull the "L" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "M". Pull the "M" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "N". Pull the "N" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "O". Pull the "O" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
Careful now, you are going to need some additional sleight-of-hand after the "P" in order to accommodate the tricky "Q":
If you've played it correctly, the word at this point should contain (at least one) "P". Pull the "P" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with TWO NEW LETTERS. No one will notice that the word got a little longer! Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "Q". Pull the "Q" out of the word, show it to the audience with dramatic flourish, and toss it away. Meanwhile, with your other hand, discreetly remove the second letter from the word, palm it and put it in your pocket. No one needs to know about it! Quietly add ONE new letter of your choosing. You're back to the original word length. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "R". Pull the "R" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "S". Pull the "S" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "T". Pull the "T" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "U". Pull the "U" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "V". Pull the "V" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "W". Pull the "W" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "X". Pull the "X" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "Y". Pull the "Y" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
If you've played it correctly, the word at this point should contain (at least one) "Z". Pull the "Z" out of the word, show it to the audience with dramatic flourish, and toss it away. Quietly replace it with a new letter of your choosing. Rearrange to form a new word.
And that's the whole alphabet!
(Applause)
Whew, take a bow.
Here's a dud example, just to illustrate how it might look:
SARDINE
(pull out "A" and replace with "B")
BINDERS
(pull out "B" and replace with "C")
DISCERN
(pull out "C" and replace with "F")
FRIENDS
(pull out "D" and replace with "E")
REFINES
(pull out "E" and replace with "G")
FINGERS
(pull out "F" and replace with "S")
SINGERS
(pull out "G" and replace with "U")
SUNRISE
(...)
This example runs out of fuel before it gets through the alphabet, but you get the idea.
For everyone's enjoyment, please try to favor more well-known words in your solution.
The series given by @Gareth McCaughan are correct. Here is another solution:
ABIDE
(pull out "A" and replace with "T")
DEBIT
(pull out "B" and replace with "C")
CITED
(pull out "C" and replace with "F")
FETID
(pull out "D" and replace with "H")
THIEF
(pull out "E" and replace with "G")
FIGHT
(pull out "F" and replace with "S")
SIGHT
(pull out "G" and replace with "L")
HILTS
(pull out "H" and replace with "J")
JILTS
(pull out "I" and "J" and replace with "A" and "K")
TALKS
(pull out "K" and replace with "M")
MALTS
(pull out "L" and replace with "R")
SMART
(pull out "M" and replace with "N")
RANTS
(pull out "N" and replace with "O")
ROAST
(pull out "O" and replace with "P")
PARTS
(pull out "P" and replace with "Q" and "U")
QUARTS
(pull out "Q" and "U" and replace with "E")
RATES
(pull out "R" and replace with "S")
SEATS
(pull out "S" and replace with "V")
STAVE
(pull out "T" and replace with "U")
SUAVE
(pull out "U" and replace with "W")
WAVES
(pull out "V" and replace with "X")
WAXES
(pull out "W" and replace with "M")
EXAMS
(pull out "X" and replace with "Y")
SEAMY
(pull out "Y" and replace with "Z")
MAZES
(pull out "Z" and replace with "U")
AMUSE
If you want to try constructing a solution for yourself, these are good starting words:
ABIDE
BAITS
BASED
BATED
BEAST
IDEAS