Loudspeaker gets mounted into an empty coconut shell. Second life for the shell, improved sound from the speaker.
Step 1: Gather materials
One speaker. 2" dia, which I was using to listen to the output of a few experimental audio amplifiers intended for alarm and warning sounds. Volume was more important than fidelity, so some sort of a resonant enclosure was indicated. It measured about 7.5 ohms with my HiOki digital meter.
One coconut shell. In two halves, with a clean break and no pieces missing. Large enough to accomodate the speaker inside.
One more half shell (optional) for the base, if you do not want your enclosure to roll off the desktop.