Backstory is here: https://bsky.app/profile/seamas.bsky.social/post/3lkigjm7sk2...
...and here: https://bsky.app/profile/matteason.me/post/3lknf6qfsek2p
tl;dr Séamas O'Reilly wrote a column in The Observer about faking a government reimbursement form for his son, who had swallowed a tooth and was worried about whether the Tooth Fairy would pay up if the tooth couldn't be put under his pillow. He published the form as a PDF (linked from the homepage) and I turned it into a digital service
Someone on Bluesky told me about our first successfully-fooled child yesterday: "I can confirm that form TF-230 worked flawlessly, and my cynical, streetwise 8-year-old son was utterly baffled by finding an envelope with his application form and a handful of coins in the letterbox this afternoon."