To add some icons to my NFC tags i designed this housing.

The sticker is placed onto the housing and a icon of your choice can be clip onto it. You can swap the icon any time.

For the housing theres a flat version which can be applied somewhere with double-sided tape and a version for 10x2mm magnets.

Let me know if you need other sizes or different icons.

I used these 30mm NFC stickers, smaller also should be fine:

https://www.amazon.de/gp/product/B06Y18JGSR/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Can be printed in PLA but PETG is more durable as its more elastic.