• LOTS of second-hand goodness!
• HD44780
• any PalmOS handheld
• cellphone
  • is it possible to mount this just behind the steering wheel???
  • pcd8544 — monochrome Nokia
• PSOne — 5" LCD
  • pro: you can get them relatively inexpensively [Amazon] [EBay]
  • con: they stopped production 5 years ago
  • pro: there are LOTS of writeups on how to detach the screen and/or how to connect it to your computer
    • extremetech.com
    • retroleum.co.uk
    • computerstuffs.co.uk
    • bit-tech.net
    • overclock.net forums
  • other screens you can use

USB displays

• MIMO monitors — 7", $130
• Matrix Orbital displays
• Alphacool External Display — 240x128
• Century Plus One LCD-8000U — 8", $200

netbooks

• lots of em