Cards:
x100 - https://www.amazon.com/gp/product/B08...
x20 - https://www.amazon.com/gp/product/B08...
If you'd rather use tokens, these work the same: https://www.amazon.com/dp/B07DX2Y2KV?...
Reader/Writer:
https://www.amazon.com/ACR122U-Reader...
IF the above Reader/Writer is unavailable, here is a backup (it should work but I bought the previous one):
https://www.amazon.com/dp/B07DK9GX1N
Alternative NFC card readers/writers that are confirmed to work:
https://skylandersnfc.github.io/Docs/...
ACR122U Official Drivers Website seems to be Down (acs.com.hk)
Here is a backup for the ACR122U Windows Drivers:
https://skylandersnfc.github.io/Docs/...
Skylandeer's Ultimate NFC Pack: