Kevin spotted a nice deal over on Woot for a $30 refurb Gyration keyboard and mouse. Back in my HTPC days I used this (or a similar model) to control a projector-attached computer. The remote and keyboard use RF, so you have increased range without line-of-sight issues. And being so compact, these are pretty unobtrusive on the couch or coffee table. Additionally, the gyroscopic features of the mouse (moving it in the air) were nice to use while reclining without worrying about a hard surface (though the couch cushions were often sufficient). The mouse charger/dock acts as your USB receiver — mine happily sat on top of the subwoofer. I don’t know what these run for today, but I recall paying over $100.