Cleaning out my closets, I found four Cidco (Earthlink) MailStation 120 Internet appliances.
These are free to the first four people willing to pay postage, one per customer.
These devices have a large graphical LCD, a Z80 micro (believed to be a Rabbit part), 12Mbit of flash, 128Kbyte of SRAM, parallel port and a modem. Runs off 4 x AA cells (included) and also has an AC adapter and phone line cable.
For a picture see eBay item #8824291050 (not my listing, btw).
For some technical info see