I’m flying to London tomorrow for TEI 2009, an academic conference on Tangible and Embedded Interaction.  It’s in Cambridge, and I’m super-excited.  We demo’d roBlocks at last year’s TEI in Bonn, and the community was really young and energetic.  Since it was a conference on tangibles, everybody seemed to have some sort of cool gadget with them.  We’ll be showing off Graphmaster, a prototype kit for playing with graph theory concepts.