I have always wanted to buy one of those bricks like at Disneyland, with my name on it. But the offer has never been presented to me. Someone should make a marketplace that aggregates all of the brick buying opportunities. I want my name to live on after I'm gone.
If your thought process is "someone should make X..." then your next thought should be "I should try and make X...".
Go give it a go and as a minimum, you'll learn something about why it doesn't already exist yet and in the best case scenario, you'll create something that lots of people find useful!
Ok, I will call this out more explicitly. For years I had season passes to the park. I don't recall ever receiving an email, flyer, mailer, phone call, text, or fax soliciting one of these brick sales to me.
And before someone asks, this isn't restricted to the amusement park. Think schools, colleges, institutions near me, etc.
Go give it a go and as a minimum, you'll learn something about why it doesn't already exist yet and in the best case scenario, you'll create something that lots of people find useful!