Here's a nice little Honeycomb-optimized chalkboard called, appropriately enough, Bord. As far as virtual chalkboards go, Bord works quite nicely. You've got six colors and three sizes from which to choose, and you can have either a green board or black board. There's a sponge for, erm, sponging, and you can load and save your drawings, and even play them back in real time. Or, you can share over e-mail or Facebook. Cleanup's simple -- just shake the board.
Best part is that it's free, though the in-app ad is pretty annoying, at least visually. Bord is definitely worth taking a look at, though. We've got download links after the break.