I've seen posts on here that you can "regrow" green onions and was intrigued. I finally tried it the other day because we go through green onions in our house faster than toilet paper.
The directions were easy: Take the white ends that are left after you use the green stalk. Place them in a jar of water and sit in a sunny spot. They will start sprouting in a couple of days. Just clip off what you need and change out the water and rinse the roots every so often.
I put three little stubs in the water four days ago and holy cow, look what I have now! This is awesome! Success!