If you will be building something which uses small parts produced on your tablesaw, you can let your shop vacuum pick up the pieces for you. It's fast, efficient, and safer than getting your hand close to the blade. Clean out the vac, then wire or clamp the suction hose so that the small pieces are drawn in as you do your cutting. Then, when you are done, simply open up the vac and collect the parts.
Plumbing stacks may run inside the walls of your home, from the basement to the attic, with openings at each floor where the pipes branch off. Use the piping runs in the basement to help you locate holes. Plug the bottom and top of the chase with foam caulk or 6ml polyethylene.