I can't post URLs yet so I'll just have to tell you where to find the things I'm talking about! I have been looking at setting up an interactive whoteboard using a nintendo wii controller, and an infrared pen based on some work done by Jonny Chung Lee - IF you look it up on youtube you'll understand.
ArtRage would be perfect to use this way - using a wiimote and a bluetooth enabled PC you can turn anysurface into a whiteboard or multitouch device!
How about a cheap (though not pressure sensitive) tablet for you? I'm sure a lot of you have nintendo wii's!?
I am going to use the setup to do live painting at an event or two! I love the fact that I can hide the menus so the image will be full screen. I would love to be able to use this software for others to have a go - but would like to be able to restrict them to just use certain tools and save their image. Also an ability to stop them exiting the program. It would be nice if I could use left click for everything too.
I hope this has made sense and maybe got a few others thinking what they could do!
take a look at friispray dot co dot uk on the web too - they use a very basic painting program... I think ArtRage would be AMAZING for it!