Nano-GPT.com is a good way to show off crypto to regular people

The site gives you access to a bunch of ai models and image generators without an account in a pay-per-prompt/vending machine style use case. But it is also an easy way to demo something you can't do with a credit card or Apple Pay. Send money to a website and see it almost instantly show up. Use a service, then refund the difference near instantly back to your phone. I've shown it to a few people who have no clue about cryptocurrency and it's easy to convey why this is new and useful.

Are there other crypto-based sites like this that offer easy/cheap demos of useful services that make sense to regular people? It would be nice to have a few in my back pocket.