I've built a few projects with those tiny little stamp sized modules—Arduino, ESP8266, Bluetooth Audio, etc.—and they all have on board LED indicators. Once these are built into their final project enclosure, I'd like some way to have the LED status visible to the user. You can buy panel mounted light pipes for this purpose, but they are expensive. All I'm looking for is something that looks like a clear plastic rivet (domed head and straight cylindrical body), that would be a press fit in a hole in the enclosure. Nothing fancy. I'm sure I've seen something like this at some point in the past, but can't remember where. Any ideas?