Just for giggles, I'm trying to think of random things that could added or incorporated into a mod that was completely useless as far as added value to the mod itself (other than for aesthetic purposes).
So far, I have:
1. an altimeter - since unless it was mobile, it would sit in the same spot all the time. I thought it would be ironic to add something like that to something that is mostly stationary.
2. a navigation screen - while a TomTom would look cool mounted to the front, it would be purely pointless.
3. a Geiger counter - since computing is typically done in the ABSENCE of radioactive elements...(that is, unless you like to match the green glow of your computer).
4. portable X-ray machine - of obvious reasons, of course. See above.
5. a Van DeGraff generator / Jacob's Ladder / neon light transformer - unless you have a nice lead shield or a Faraday cage, who wants to introduce that much EMI at once?
6. a weather machine - ok, maybe if it was hooked up to an external source for information, but if it was setup for inside, i think we could all just figure out the weather by looking around.
7. tachometer - maybe if used to only measure the fan rpms, but measuring clock cycles might end up being tricky.
Those are just a few. I'm guessing someone else could help me come up with even more useless stuff to add.
I find that if sometimes I make a list of stuff I can't use, then it helps me eliminate them and therefore focus on what things could be used for a project.