Livid Instruments are now offering a kit enabling the DIY enthusiast to create their own customised MIDI controller (cue a, "YAY!" from all digital AV enthusiasts who have looked at what's on the market and thought, "almost perfect, if only they'd included a..."). Have a look at the parts on their site and take a few minutes to watch their video:
Another search / stumble session found this video which gives an interesting example of how the tools used can shape the quality of the end creation. FAIRLIGHT!
When I first started becoming interested in live video work using PC the two pieces of software that seemed most attractive were VJamm and Motion Dive. I hear there's a new version of MD almost ready for distribution. Can't wait to give it a spin!
Maybe you know Staalplaat? Do you like it? If so, you may be pleased to learn that they have revived their Staaltape label. As you might hope/expect the new releases/re-releases come in some curious packaging.
Since building that device I've been tinkering with various other projects. Here's a (as yet unhoused) battery-powered noise maker I got wheezing yesterday. The circuit is based on a Thingamagoop. Sadly I didn't do a sound check before recording, so you're not really able to appreciate the amount of low-end it produces, but trust me when I tell you it has a LOT of rumble to give. I'll post an update if I can find something pretty or odd to put it in.