I've got a set of rim brake rims off of my wife's old bike. I've replaced her old wheelset with Mavic Crosslands UST. So the old rims are just sitting around, they are in really good condition... I'll take some pics tonight when I get home and post them up... if you're interested.
You can have mine. They were lightly used, maybe 1 month then we got new wheels. Since then, the wheels have been sitting in my garage for the last 4 yrs! Please take them, I need to make room in my garage.
I think I have a no name front rim brake wheel floating around somewhere. I could vouch for it being straight and round, but it won't be anything fancy. I'll dig around and see if I can find it.