1. Put "pull points" in the floor on one side of the garage, they are surrounded by rebar and over a yard of concrete. I am a gearhead and do alot of auto work this way I can straighten frames etc and hold down anythig i want to.
2. Also put outdoor motion detector security lights on the inside of the garage in all 4 corners, this does two things, one when you pull in at night it really lights the place up, much better than the garage opener light(my garage is 40X60, gets dark in back) and two, should scare away anyone who breaks in, the silent alarm will go off in my home close by, and if they haven't left before I get there, the lights will guide their way to hell. They don't come on during the day unless it is real dark, and i also put them on a switch so i can turn power to them off on days that aren't bright.
3. Also put a mirror in front of the 4 post lift so that you can see exactly where the wheels are when you drive on it.
4. ceiling fans for hot summer days and to get heat down off the ceiling (cathedral) in the winter
also put in the sliding screen so i can just heat the working half in winter