A wonderful concept coming from a group at MIT, imagine a matchstick which is not so much a functional way to light a cigarette but a representation of an event/memory. Enter memory matchs. One end of the match features a camera and mic (very small and included in the match stick) the other end features an extremly micro projector. By activating the recording end (using it like a match) you can record video and audio using its camera/mic and by activating the microprojector end you can project this recorded memory/video onto a nearby surface.

This innovative way of using micro projectors is great and shows the technologists really getting to grips with ideas that may be viable within the coming few years. A very neat idea.