I bought a pack of 40 little plastic NFC tags like these https://www.amazon.co.uk/NTAG215-Storage-Compatible-Enabled-Devices/dp/B0BV9B4VH4/ in the hope of using them for Home automation. As part of that, I made these, small, 3d printable discs into which the tag could be embedded mid print, and which would allow you to label them. They're kind of over the top, and I didn't end up using them, but maybe someone else will find a use for them. Currently there's on/off, a couple of different brightnesses, and various colours, since I primarily made this with smart lighting in mind. If you want some other text though, let me know and I'll add it!

For those who do want to print this, instructions for adding a pause at a certain height are here: https://forum.bambulab.com/t/stop-printing-at-layer-height/18774/3 - I recommend pausing right before it puts down the layer above the cavity in the centre.

P.S. For the photos, yes I'm aware that transparent / translucent is probably the worst filament for this, but I just wanted to make a quick prototype, and it was already loaded into my machine. I decided after that that I didn't particularly like it so never printed it in a solid filament, but I'm sure it will look much better!