The basics are good, but you can always do one better by modifying the kit to make it do different stuff

Basic Mods

1. Laser-cut cover
2. Scrolling Message
3. No timeout
4. Battery Power
5. USB Power

Firmware hacking

1. Creating a PPI (parallel port interface) or Attaching a programming header
2. Hacking the EEPROM and Flash with PonyProg
3. Using Avrdude to program the flash with new code

Installing a programming header