Stacked lids, bottle tops and caps. Fun for kids, but would also make great garden art! I'd think the trick for doing this project is to collect as much different color, shape & size of lid/caps as possible before start putting them together.
Plastic Bottles Craft Ideas for Kids Plastic Bottles or Detergent Bottles Craft Ideas for Kids This section has a lot of Plastic Bottles and Detergent Bottles crafts for preschool and kindergarten. This section includes, enjoyable craft ideas, free.