A half years ago, I have been working on an application called "Seatify ( seatifyapp.com )". This is a smartphone application like a community where users help each other to book a seat at the cafe, office, restaurant, anywhere. So you can book a seat through the customer, not the owner.
I have already quit 2 reasons. 1) Not too often, 2) Booking fee is so expensive for even $5. But today, I have an idea if it's a membership model like Nomadlist, that may work. I hope I can pay $10 monthly.
In addition, it helps users to give an opportunity to meet up with new tech people :) What do you think?