I was perusing the children's fabric at my LQS last week and there are some adorable fabric lines in bright colors with all sorts of themes (dinasours, bugs, aliens, etc). I wonder if you could work these blocks into a quilt using these kid's fabrics. Maybe even use your blocks as large cornerstones in a themed quilt. Try window shopping online for children's fabrics to get some ideas. What you have is an opportunity to exercise the creative side of your brain (I can never remember if it is the left or right side). I would have brainstorm away and have fun with them!!