Akihabara News shares this mouse, which I think is the perfect complement for an "origami" device. The SlimG4 is super slim at only 5 millimeters, so you can easily find room to carry it in mobile gadget bag. If you’ve got a PCMCIA card slot on a notebook, you can tuck th G4 inside for safe keeping as well. Here’s the unique twist: it actually unfolds and has a thin USB interface and wire integrated in. Just unfold like a paper swan and you’ve got a skinny mouse for your notebook or UMPC. Most impressive are the two mouse buttons and a touch-scroller in such a small package!