Variety Gridlocks

Question

Gridlocks is a word puzzle genre invented by my friend sus. Here's how it works:

• You are given 3x3 crosswords to fill in.
• Two of the crossword clues clue 3-letter words that must be entered down the middle column and the middle row, intersecting in the center.
• Two of the crossword clues clue 4-letter words that can be found be found by anagramming the letters in two separate tetrominoes found in the grid.
• Clues may be presented in any order.
• A final answer may be extracted by taking the unused letter in each grid in some order.

Sound confusing? Here's an example:

..and its solution:

The 3-letter words are SAT and BAR, and the 4-letter words and PRAY and BASS. The extra letter is T.

Without further ado, here are the puzzles!

Answer 1

Cubelocks:

The answers are
Before - Ere
Blunder - Err
Cold Cubes - Ice
Deceive - Lie
Expert - Ace
Garland - Lei
Net - Web
Ocean - Sea
Polite title - Sir
Prickly husk - Bur
Regret - Rue
Teensy - Wee

Adhesive - Tape
Chess piece - Pawn
Den - Lair
Duct - Tube
Hay unit - Bale
Kind - Nice
Legumes - Peas
Naked - Bare
Ooze - Seep
Rip - Tear
Sat _ book - Prep
Très - Bien

These give the following faces of the cube

or the full cube
Reading the extra letters in the order given by the diagram gives the final answer BEWARE.

???????:

The answers are
iPod type - Nano
Spouse - Wife
Musician Brian - Eno
One ___ million - In a

Angsty music - Emo
Pamper, with "on" - Dote
Company - Firm
"I think," in texts - IMO

Anger - Ire
Passion - Fire
Before, poetically - Ere
Delight - Glee

Flightless bird - Emu
Subatomic particle - Muon
"I love," in Spanish - Amo
Qualified - Able

Which we can fit into the grids

The extra letters G, O, E, D give the corner letters for the final gridlocks puzzle. The wordle puzzles can be solved as

These new clues have the answers
Fine - Good
Miff - Rile
Free - Rid
Lube - Oil

giving the final grid

where we can read the final answer GRIDDLE, a combination of gridlocks and wordle.

Gridlocks #3:

The answers are
Many mins. - Hrs
White-tailed eagle - Ern
"Moonstruck" actress - Cher
One of 60 billion in a min. - Nsec

Approves - OKs
Wisecrack - Joke
Courage, informally - Guts
Guitar relative, briefly - Uke

Muslim endowment - Waqf
Wonder - Awe
2016 Presidential candidate Nuts - Deez
Sheep - Ewe

Gambit - Play
Soul, in France - Ame
Language also known as Pelasla - Vame
"Little Women" woman - Amy

with the grids

The extra letters give the final answer IBEX