This is interesting. I think as you've said the real problem is not the accessibility of the things to themselves, there are thousands. The difficult part is making a choice. If the app were to present a limited selection of vetted, definitely worthwhile activities (say 3 per day, or 10 per week) that you could book in one tap, no forms, that would be quite fun.

A difficult part I see is the huge range of interests people have. If you present salsa dancing, comedy and dinner, would you have enough range? The difference with meal kits is that everyone eats and most people enjoy eating most things. If the app to were recommend a concert as one of the 3 options, it would be very unlikely to match my musical taste.

A lot of people enjoy a regular commitment to something as well, becoming part of a community and benefitting from the investment made in attending something regularly. You wouldn't be able to get that with this.