I have a bunch of cords I don't need. What should I do with them?

You could bring them to school or library or computer repair shop.

There's also the second-hand stores, some give a percentage of their earning

to a charitable interest or non-profit group and may also accept electronics as

donation; I've seen bins of cords, power adapters, other hardware & software in

such stores. Some re-sell at reasonable cost, than see usable items trashed...

Usually the Apple branded accessories appear to be quickly sold in those

locations. If you have an idea of what the cords were from (brand/purpose)

that would help whoever you give them to, helpful information on their re-use.

Sometimes these stores get the rest of the product, and lack just a cord.

Good luck & happy computing! 🙂