Splatoon 2 has this wonderful feature for swapping between loadouts quickly using amiibos. Of course, the appeal of the Switch is portability, and lugging around multiple amiibos isn't really feasible.

Sooo, I figured, why not make it something more portable (or better yet, wearable?).
Compatible with any NFC215 tag, so could be used for other NFC purposes if you're not on board with splitting amiibos open.

8 slots (one for each Splatoon amiibo), stick your NFC tags inside and then cut out some icons to mark which one does what. I've attached my preferred loadout for convenience.

Made in openSCAD for easy alteration!

UPDATE:
Hey guys, I highly recommend you check out jewzaam's take on this! It's multiple parts and takes a little bit of assembly, but is overall much more portable, expandable, and probably comfy:
https://www.thingiverse.com/thing:2895461