Plastic Bottle Flowers & 22 other DIY Spring Crafts for Kid to Make
Great for small oval stones on the fly.
Turn Milk into "Plastic"! - great science experiment to make plastic! (See comment by "Ben" for actual science explanation)
DIY plastic bottle craft -- this looks absolutely gorgeous!
How to make a fairy house lamp using nothing but Coca Cola plastic bottles, tin foil, paint, hot glue, and paper clay.
Soda Bottle Wind Spinner or water bottle spinner
How to Make DIY Turtle Toys from Recycled Plastic Bottles - convert to swimming Dino?