Amazon Affiliate Link: amzn.to/3RPC9TQ
Price as reviewed: $20 (for 5 sheets)
5Pcs Laser Engraving Marking Color Paper，Black,14.2"*9.4", LAKIX Laser Engraving Marking Paper, Laser Engraving Material for Glass, Metal, Ceramics,DIY Crafts
It took me a bit of playing around to figure out how to use these guys effectively.
1. Cut to size.
2. Soak in water 30-45 seconds). Transfer to your object like a decal.
3. Let dry.
4. Laser engrave. On my 3W diode laser, I used full power. [This melts/sticks the black covering to your base material.]
5. Soak in water again for ~ 10 minutes, scrub off the non-engraved remainder with a blue scrubby sponge.
If you want to use it on something that can't be soaked in water, you may be able to just wipe with water, or leave a damp paper towel on top of it.
For this specific paper, the color you end up with is more of a dark gray than a true black, and it works best on light colored substrates.
Be prepared to burn through a few test pieces to get your laser settings right and get experience with the decal style transfer and soak/removal process, but once you get it down the results are quite good.
I put a plate I had marked through the dishwasher and it came through one wash cycle with no problems at all.