We tend to shy away from "Best Defense", "Best Autonomous", etc. type awards, because frankly, a lot of times it's obvious who wins it.
We tend to give out more imagery, pit design, and favorite alliance partner type awards.
Last year we gave out an award for the best answer to one of our pit scouting questions (What superhero best represents your robot and why, with demerits for being boring and saying Batman or Iron Man
).
I should also note that we tend not to give out trophys or plaques - for the last couple years we have given out customized superhero capes (to go with our theme). They're easy to wear or just hang up like banners. A lot of recipients seem to think they're pretty cool.