Mike Kuniavsky has hacked together a "magic-wand" for "smart objects." If you think that the best model for ubicomp is animistic pan-psychism, then this is your interface.
"Command-line input to Processing or NADA, for example, will allow easy magic wand control of things like, oh, Roombas, lights, giant mechanical beasts or teleporters. Hide the computer, disguise the mouse, and action at a distance is yours. Kinda."
http://www.orangecone.com/archives/2006/04/how_to_make_a_m_1.html