anyone wanna comment on a cheap camber gauge? I need to buy one, I see some that are magnets that hook onto the rotor or hub, those work OK for minis? Or should I spend more on one that uses the rim lip

 

I got the smart camber gauge. Not inexpensive but works great.
I previously made my own inexpensive camber gauge using square tubing, cut to the diameter of the rim, and a craftsman digital level screwed to the bar. I just subtracted degrees from 90 deg to obtain camber. However, it was not very accurate.

 

I built something similar, but with a spot for my phone. Levels for phones are accurate up to .1 degree and very repeatable, so I think it's a decent alternative.