• Need to be NTAG215 tags.
• Gotta find an amiibo_keys.bin/key_retail.bin (same thing, different name) file.
• Tags can only be written once.
• An Arduino nano will work fine, and you can get kits off Aliexpress super cheap.
• There are also 'emulator' devices like the N2 Elite, which let you store a bunch of Amiibo on there, and can be rewritten or whatever.

• amiibro.com - Info. on using Android.
• HiddenRamblings/TagMo - Android software for reading and writing NFC tags. Not on F-Droid or Google Play.
• Making Amiibo NTAG215s - GBATemp forum thread.
• Faking Amiibo - An FAQ of Sorts?

• Ally

• garrett-davidson/pimiibo

• https://games.kel.mn/en/create-amiibo-clones-with-arduino/
• Linux: crazyquark/nfc-amiibo
• Windows: Patriack/AmiiBomb

• Thenaya (by TagMo person)
  • https://gbatemp.net/threads/beta-thenaya-tagmo-for-3ds.475870/
  • HiddenRamblings/Thenaya
• For 3DS games you can also use some homebrew to spoof Amiibos: hax0kartik/wumiibo

- sort

• https://www.reddit.com/r/amiibros/comments/5r1y6u/create_amiibo_clones_with_arduino/
• https://www.reddit.com/r/Amiibomb/comments/5ywlol/howto_the_easy_guide_to_making_your_own_amiibo/
• https://www.shopnfc.com/en/content/8-how-to-write-nfc-tags
• DIY amiibo cards - GBATemp forum thread.
• How to write amiibo files to NFC tags using Arduino IDE - GBATemp forum thread.
• https://old.reddit.com/r/Amiibomb/
• https://nfc-bank.com/bins.php?s=7d7b13e6ae07d4deef0ef4488475ea62

• Amiibo