Submission + - DIY mid-air pointing device
Werner Heuser writes: "From Linuxdevices: "Three researchers at Microsoft Research have created an innovative handheld pointing device that works in mid-air. "Soap", which resembles a bar of soap, is based on hardware found in a common wireless optical mouse, and is relatively easy to make, according to its inventors. Imagine numerous situations in which one might wish to control an appliance while standing or walking, for example, when giving a slide presentation or interacting with a wall-sized display...". There is a YouTube video showing the Soap in action and detailed instructions to make your own Soap."
