I'm not a crafty person, but I watch a lot of makeovers on HGTV. I've seen them make awesome indoor/outdoor mosaic tabletops out of smashed glass and plates held in place by grout and polyurethane. Perhaps you can do the same with these colorful baubles?
Another thought is to suspend them from trees or a birdhouse, coat them with peanut butter and birdseed. The colors may attract birds and give them something delectable to munch on.