a lot of veggie, you can regrow them
as long as you don't harm the root and base
it will keep reproducing
here i have some green onion that i bought from walmart
cut 2-3 inches off the base
(we use these, so we don't grow from seed and it takes less time)
you should get something like these
some of them already start regrowing back, (bought some 1-2 week ago keep the root on the counter)
find some dirt in your backyard and plant it on the ground
UPDATE:
you thought i was lying huh