2" Printable Round Labels for Laser and Inkjet Printers - 600 Blank Labels, 30 Sheets for Thank You Stickers, Price Tags, QR Codes, Business Logos - Spartan Industrial Template C004

This is by far the cheapest way to do this. These stickers are DIRT cheap-- go on Amazon and you can get 60 pieces for under $10 USD. Add another $7.98 for some printable stickers and you've got something totally custom- stick the RFID sticker under the printed sticker and stick it on the wall. Make it a colorful thing like this. Then in HA you can make a dashboard that shows the last time since each task was done.