Dealer stuck my inspection sticker on the back of the front fork. Not very conspicuous there. I considered a small plate near the pegs, but technically by law they cannot be stuck to something easily removable. Anyway, that's how I did it.
Well, here in LA, you still require an inspection sticker, but on a bike it does NOT need to be displayed, only kept on the bike in case you're stopped and are asked to present it! Therefore, I keep it with my registration and insurance papers in a zip lock baggy under my seat!!