I made an NFC Business Card that I could carry around in my wallet so I could direct people to my Linktree with all my important links and information (email, resume, LinkedIn, etc) essentially giving them my business card, without the need to give them a physical card!
I designed the card and drew up the schematics in KiCad (the designs are in the image carousel). I then sent off the PCB designs to JLCPCB to be made into PCBs. Then I soldered the NFC chips onto the PCBs myself.
5 PCBs
$2.00
5 NXP NT3H1101W0FHKH NFC Chips
$1.36 each