: I just purchased a compressor and nail gun for some home remodeling jobs.
: Does anyone use air tools or any sort for building? sanders, routers, etc?

How big is your compressor (gallons, CFM)? Most air tools require higher volumes of air than nail guns. I recently bought a Porter Cable pancake compressor and finishing nailer combo for the same reason you did and it's fantastic, but I have no illusions that the compressor will work with a sander or other air tool.

: Maybe I need more tools

Of course you do! Doesn't everyone?

BTW, if you haven't aready, get a FlexEel hose for your compressor. No more infuriating kinks and coils and it's much lighter when you're working on a ladder or over your head.