Here's something useful: a bag full of every audio adapter you'll ever need. Intended for musicians, it's also good for anyone who works with sound and has the need of connecting various devices to a mix board.
Here's a program that will print out video viles arranged so you can make them into "film." Inkjet Printed Film Process renders them onto paper. I imagine this would make a mess of the projector, though. It's more of a conceptual thing than something I would actually consider running through a real projector...
Instant Video To-Go is a USB-bsed hardware video encoder. While the quality is limited to that for ipods etc., the idea of a plug-in USB hardware encoder is very exciting.