The Parallax 29121 LCD Terminal AppMod low-cost display is excellent for your smaller projects.

 

The module has a 2x8 display, four pushbuttons, and will connect to any programming board that has a 2x10 AppMod header.

 

 

Downloads:
Add an LCD AppMod to the SumoBot (.pdf)
SumoBot with LCD AppMod Source Code (.zip)
LCD Terminal AppMod Documentation (.pdf)
LCD AppMod Demo (.zip)
LCD AppMod Demo (Javelin) (.zip)
Hitachi44780 Datasheets (.pdf)