The Micro Center here in Cambridge, MA has a DIY area with an impressive amount of boards, kits, tools. The Espruino would be a natural fit. If it helps, I can try and speak with the local purchasing manager the next time I visit.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
It would be nice. I was trying to do that with Maplin in the UK, but haven't had much luck yet.