This is a sound recording exercise that investigates the properties of various microphones, but it also has considerable potential as the start of a more creative piece. The sound samples obtained this way may be useful for a number of the other projects.
Place a Tibetan temple bowl on a table and surround it with a selection of microphones. Record some strikes or rubs of the bowl simultaneously onto separate tracks per microphone. Compare the results.
In the absence of a Tibetan temple bowl, any kitchen bowl or pan with a long, clear resonance will do. Adjusting the positions (height, distance,) of the microphones can add another interesting dimension to the project. This project can be extended by positioning microphones all around (above, below, inside, etc) a piano.