Placing empty glass bottles (wine bottles, antique bottles, colorful bottles) in the garden as a way to trap evil spirits is a Southern tradition. These days, a bottle tree is also a way to remember a (Bottle Garden Creative)
DIY outdoor waterfall sculpture - Old clear chandelier crystals & old clear necklace beads, tin watering can, clear fish line . hang watering can then connect crystals/beads with clear line flowing out of can spout .
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.