These links describe unusual inventions of Bryan Mumford. They’re no longer made for sale.
Automatic Puny Tune Player
A machine that plays songs on an actual Puny Tune Minaiture Flute
Frog Rock
A natural sandstone boulder that croaks
Mystery Box
A wooden box that’s both smart and shy
Harmonic Visualizer
An electronic device for showing visual representations of musical harmony
Harminium
A miniature electronic music synthesizer
Shirtpocket Billboard
The world’s smallest scrolling electronic sign
Desktop Billboard
The world’s second smallest scrolling electronic sign