Great idea if the girls want to make items to sell for profits going as a service project. I think this would make an awesome service project for a group or girl scout troop produce bag out of an old knit T-shirt.
No-Sew T-shirt to Tank Top Project. All you need are scissors and a too-big t-shirt. this is actually great -- I hate tee shirts (necklines. blech) and tank tops are too clingy. i'll be making this for workouts!