People with ADHD genuinely lose things a lot, it's not as simple as just put them in the same place. I've lost count of the times my daughter loses important things (normally causing a panic when we are running late) so am going to look at buying these tiles for her.
Did you have to hack your tile off a train floor, only to heroically manage to prise it free at the last second?
Has it survived a fortnight of being stood on by folk with traces of dogshit on their shoes and industrial train cleaning repeatedly?