Regarding having these made - take a look at dirtypcbs. They're a little half-assed, but their prices are low - maybe low enough to make the numbers work out.
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.
Regarding having these made - take a look at dirtypcbs. They're a little half-assed, but their prices are low - maybe low enough to make the numbers work out.