Marble run made out of toilet paper rolls and paper plates. Ok, so this was a rad idea but pretty tough to do with 2 kids. It would have been good with just my 5 year old. The kids got frustrated that it took so long. I ended up finishing it with a Martin
Ball drop using pvc pipe. Use different colored tape around the top of each to match the colors of the ball pit balls. Eventually this can be used to work on identifying colors!
If you want to arrange an outdoor kitchen location, then setting the designing of mud kitchen with the wood pallet use over it, is surely one of the fabulous ideas. Check out how creatively the mud kitchen wood pallet art work has been implicated in this