You could try getting one of those cheap Smart Bracelets and flashing Espruino on it like on this post though it is likely that you'll receive something very slightly different with a chip that Espruino doesn't support :(
I've tried this before and been unlucky, but soon I'll be trying it again, I'll probably buy this one.
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.
You could try getting one of those cheap Smart Bracelets and flashing Espruino on it like on this post though it is likely that you'll receive something very slightly different with a chip that Espruino doesn't support :(
I've tried this before and been unlucky, but soon I'll be trying it again, I'll probably buy this one.