REGROW PRODUCE YOU BRING HOME FROM THE GROCERY STORE.
The photo shows Romaine lettuce I have growing on the window sill in my kitchen. It gets indirect sunlight which I’ve found is great for lettuce. Once the root hairs appear, after about a week to 10 days, I transplant it into a half-gallon milk carton filled with soil. [Cut milk carton in half with a utility knife. Put drain holes in bottom. Fill with potting soil. One container is enough to grow one head of lettuce.]
Peanuts for saving? Depends on your definition of peanuts. One bag with three heads of Romaine lettuce costs me about $2.99. I eat about six heads of lettuce a month so my lettuce bill would be about $6.00. That comes to $72 a year just for lettuce. By cutting that expense in half, I save $36 and that is just on one produce item. This is also a great project for children.
Celery is another vegetable that is easy to re-grow (in the same fashion as lettuce by cutting the end of it off and sticking it in water).