Have you ever thought of carrying your piano keyboard with you? You can. There’s a roll-up, rubber piano keyboard available for only $30. Even better, try the “wearable piano”, created by Masahiko Tsukamoto, a Professor on the Faculty of Engineering at Kobe University in Japan and shown here at a 2004 wearable computing fashion show in Japan. It’s best worn with a pianist you know and like.

The cat piano is an altogether different creature(s). It was described as follows by German scholar, Athanasius Kircher, in his landmark 1650 work Musurgia Universalis.

“In order to raise the spirits of an Italian prince burdened by the cares of his position, a musician created for him a cat piano. The musician selected cats whose natural voices were at different pitches and arranged them in cages side by side, so that when a key on the piano was depressed, a mechanism drove a sharp spike into the appropriate cat’s tail. The result was a melody of meows that became more vigorous as the cats became more desperate. Who could not help but laugh at such music? Thus was the prince raised from his melancholy.”