Cameras and wands may be the game controllers du jour, but it seems there's still room in the world for virtual reality experiences a bit more concrete -- like these buckets, filled with water, that let their user physically paddle through a digital dreamscape. "Channels" uses a pair of flex sensors attached to plastic spoons to monitor the flow in each bucket as a projector throws the minimalist 3D environment up on a nearby wall. Meanwhile, "Cadence Chair" uses an antique rocking chair outfitted with an accelerometer to align ribbons of light, and if you do it in the right rhythm it plays a hidden video. Both are student projects from New York University's Interactive Telecommunications Project, and as you'll see in videos after the break, both look pretty darn cool. We're having this sudden urge to go back to school.