My husband has made ramps for my motorized chair for most of the outside doors of the houses we have lived in. They can be removed easily, too. We usually treat them with Thompson's water seal, but they are slick when wet, so we cover them with indoor/outdoor carpet. They will last for years. He even made a covered dome for our pool several years ago out of pallets and some discarded flooring. It was 10 ft tall X 42 ft X 32 ft. It was an ellipsoid dome. We covered it with 5 yr greenhouse plastic and it was nice looking and served us well as long as we lived there.

The pool didn't get dirt and leaves in it and it was warm in there year round with a space heater. I think it is very resourceful and wonderful.