I don't know if this really qualifies as DIY, but it could be helpful to others.
I work at a grocery store and always come up with crazy ideas to reuse some of the store fixtures. This was one of those cardboard displays at the end of every aisle...now it's my new hatchling rack. It holds 48 large delis, 72 small delis or 54 sandwich containers. All I need is some FlexWatt and I'm good to go.