If you have a small air compressor or other machine in your workshop that vibrates, you can dampen it by putting special foot pads of corrugated cardboard squares under each of the legs. Make the pads about 2 in. thick by gluing several squares together. Glue so the corrugation of one piece lies at right angles to that of the next square of cardboard.
A small mirror of the kind carried in purses can be helpful in diagnosing toilet clog problems. If the toilet becomes clogged, position the mirror so it reflects up the drainway. Then shine a flashlight on the mirror to see if a foreign object like a child’s toy is causing the problem.