What should I put on my NFC ring?

Willijs3 thought this was worth mentioning said
1

I recently purchased a ring with an NFC tag embedded in it. It has an RFID chip on one side that I use to unlock my phone (and can be programmed for my door locks at work) and an NFC tag on the other. I can’t decide what I want to put on the NFC chip. I’m thinking business card details would be the most practical, but that seems boring. I have 1K of space to work with. Anyone have any ideas?