Step 1: Build your based for piping in compressed air
As I said, I used items around the house - so I had a water hose splicer,
Step 2: Connect Pieces to build base.
Step 3: Build your pneumatic cylinder.
This was the really easy part for me. I just needed to know how much I wanted my prop to be lifted up and cut a piece of 3/4 inch pipe just about that length. This will house your piston and eventually connected to the base I build earlier.