If you're 3D printing you could print the whole housing (or part of it) out of something rubbery that'd flex where the buttons are :)
@Gordon started
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.
If you're 3D printing you could print the whole housing (or part of it) out of something rubbery that'd flex where the buttons are :)