20
A video projector with VGA plug to a laptop.Sound (we have mixer and other stuff).
Also a wall to project and to stick the cups to (see the link how it looks like)
http://www.youtube.com/watch?v=12857ml6Rsw&feature=related [http://www.youtube.com/watch?v=12857ml6Rsw&feature=related]
we can also use a big peace of paper ( 300x300 cm for example), so we can stick the little things to it and atach the whole thing to the wall. Also we need a few ours of work before the performance. So it would be better to performe not on the first evening, but to have a day of work at the place.