Adesso CyberTablet

Adesso's just launched a couple of low-cost pen-based PC tablets called CyberTablets (someone tell them it's not 1995 anymore).  They range in price from $69.99 to $169.99, the big difference being the actual size of the tablet (from 6x4.5-inch to 12x9-inch) and wireless connectivity on the more expensive models.  All of the tablets also come with wireless mice, although it doesn't look like they're optical. Butterfly design is presumably optional.

Gametech portable Pocket Famicom (NES)