There are several things that can be added like silk flowers or vines, they can be hot glued on, also using some flat back colorful stones will give it a very beautiful look, they can be found in most craft stores like Michael's or the dollar stores. Paint is always a good choice, hope that helps.
Mod podge wrapping paper , Fabric or scrapbooking paper to the inside if clear, or spray paint in fun colors then stencil !
Oh Thanks for the ideas!
I've used DIY'd chalkboard paint on them, labeled and stored 'stuff' for the pantry in them.