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.
Fountain: How to Build a Concrete Fountain, Create a stone-lined garden pond, then carve a waterfall out of a block of stone using basic power and hand tools. The technique is simple, even for beginners.
DIY outdoor chair using pallets wood. This looks a bit more than I could tackle as a DIYer, but I am pinning just in case I decide to attempt a project like this one. (Sure would be fun to have a swing like this in the backyard!): I'm doing this someday