These are the ones I have. They seem to work pretty well.

30pcs NFC Ntag215 Adhesive Paper Tags - 1 Inch(25mm) White Round Stickers - Fully Compatible with Tagmo/Placiibo Amiibo - and All NFC Enabled Cell Phones & Devices https://smile.amazon.com/dp/B08BTZTKRL/ref=cm_sw_r_cp_api_glt_fabc_V81CXPSV7S5EFRA771E6?_encoding=UTF8&psc=1