In no particular order, here are several shorter news items that have been collecting dust in our inbox. The Swirling Brain sent a link to a sort of three-legged robot simulator called acrobots. Is it a game? Is it a graphics demo? Who knows, but it's fun to play with. A couple of readers mentioned a Wired article about Bobby Zokaites and his modified Roomba Art Bots. Roland Piquepaille has written a new blog post about jewelry polishing robots that can grind and polish rings faster than human jewelers. The BBC reports that robot blimps will be fighting crime in the Venezuelan capital, Caracas. For a more down-to-Earth story, the MAKE blog has a nice intro on the idea of Open Source Hardware.