Gravy Monster karma'd me a rim, and at difficult time for me (wee lad - 18 months at the time - was in hospital for a while, and I was staying with him - I nipped ("nipped" being a euphemistic term for a ~120 mile round trip) home to pick up some clothes and stuff, and found the rim, well packaged up, and hidden by my postie).
And very recently, I bought a frame and forks from hybrid, and was very pleasantly surprised to find he'd left the stem and handlebars on (very nice and helpful touch, I thought), and a seat clamp bolt in (which I was expecting to have to buy).