Looks really cool, but unfortunately I can not use it because thermal printing paper is coated with endocrine-disrupting chemicals like Bisphenol-A (BPA) or its substitute, Bisphenol-S (BPS), which can be absorbed through skin contact, potentially leading to metabolic, reproductive, or cancerous issues. It’s basically a very fine plastic dust. Though risk depends on exposure duration and amount, it’s not something I would feel comfortable with kids.
https://pmc.ncbi.nlm.nih.gov/articles/PMC5453537/