Create a tube wall using PVC pipes - it's an easy DIY play "activity" for kids. can also use the thinner tubes, cheaper, and add a hose attachment, drill holes in the tubes with the kiddos, buy connectors, and make own sprinkler. Did this, great present! for about $30-50 you can have TONS of fun all summer long!
DIY: How to Make Industrial Curtain Rods - That Look Like Copper - using pvc pipe, a connector, a flange and copper spray paint, you can create your own rods for very little money - via Our Vintage Home Love
Batting Bar Tutorial: (2) clothesline hooks 3/8" x 7 1/4" (1) 10ft stick of 2" schedule 40 PVC pipe (2) 10ft sticks of 1 1/4" rigid conduit (they need to be threaded on the ends- that is important!) (1) 1 1/4" rigid connector (10 ft) of the hook part of industrial sticky back 1 1/2" wide velcro