Tagmiibo is a app for IOS to scan and write amiibos, its the app I use for making amiibos. Theres a free version and a paid version The free version works well enough for this.
There is an app called Tagmo that looks good. It appears to be free
You can buy all kinds of little stickers, plastic tabs and cards that will work, just make sure it says NTAG215 where your buying it from. I would suggest some of these off of amazon:
- For Cards: https://a.co/d/3JtyHqp
- For Stickers: https://a.co/d/1Bt9gjC
- For Tabs: https://a.co/d/cTA656A
- Download the bin files from here and unzip the folder
- Go to your app of choice and follow its instructions on loading an amiibo file and secret key file (also in the amiibo zip file, its titled 'locked-secret')
- Write the the amiibo file to the tag and your all set!
- Keep In Mind you can only write to it once!