Where did it come from: an etymology puzzle

Question

You know these. This not a test of trivia, these are simple words every 2nd-grader knows, you just have to remember you know them.

1. The medical assistive device with the same name as the woody grass from which it was originally made
2. The cleaning device with the same name as the shrub from which it was originally made
3. The cleaning device with the same name as the sea animal from whose skeleton it was originally made
4. The container with the same name as the tree from whose wood it was originally made
5. The article of personal hygiene with the same name as the gourd from which it is made

(If it helps, all the words are six letters or fewer.)

Many thanks to Kate Gregory for #5.

Answer 1

1. The medical assistive device with the same name as the woody grass from which it was originally made

Cane

2. The cleaning device with the same name as the shrub from which it was originally made

Broom

3. The cleaning device with the same name as the sea animal from whose skeleton it was originally made

Sponge

4. The container with the same name as the tree from whose wood it was originally made

Box