If you wish to do a good job then you need to offer bitcoin and other altcoins gift cards. I would be interested in buying such cards like presents for some close people I know, in that case I would like more expensive gift cards, and some cheap ones for people I know and I wish to give them a ticket for this crypto world.
Idea is great and I think there was similar ideas in the past. Every start is hard but if you are dedicated maybe you can do something more and start some good business. I will follow this topic and if you start with crypto gift cards I will be one of your first customers. Good luck my friend, if I don't see your start feel free to PM me.