Use an old tire to create a small backyard pond. My kids, 3 sons, have been helping with yard work and planting. They keep asking for a pond. I think this is a great DIY project to do outside with them. Looks simple.
Raised pond surrounded by a raised garden bed. The plants will shade the pond from the hot summer sun, you can raise tilapia or just a small goldfish pond. Would look great next to the patio/deck or among the raised garden boxes