Preceding commercial for context: https://youtu.be/yIutgtzwhAc

My guess it is hyperfocus related. Which, looking through a few sites seems: not ADHD specific, might be found in a higher rate in people with ADHD, hasn’t been researched thoroughly.

Full face tattoo and getting multiple people on board might do the trick for however long until additional markers are found for the edge case. I think clown makeup would do better since it varies day to day.

One of the things you could do is calculate towards understandable numbers. Per tax payer in Britain (32 million) it would cost ~1150 for that first item on the list. Imagine the amount of dinghies you can buy per person for the lot of these. Billion just isn’t that magnitude to most people.