This tiny grand piano from Sega Toys is only about a foot long, and each of its 88 miniature keys are only 4mm wide. But when you press down on a key with, say, a toothpick, it plays that note through ...

Janice E. Kelsh held four pewter pianos the size of Monopoly tokens in the palm of her hand. “I call these the babies of the bunch,” Kelsh said while standing in a room filled with hundreds of ...