The only other way I can think of to get cycles is to get a theme tipped, you could try creating and publishing some themes and see if you get some tips that way, but otherwise, the best way is bounties.
I mean, there’s not an official way of granting/charging cycles. It is actually possible to charge cycles by checking the amount a user has tipped and this has been done before, although you’d definitely want to get permission before creating a service that charged cycles.
That would entirely depend on what kind of service you wanted to create and what language/s and tools you wanted to use; I’m sure someone on the forum, if not me, would be able to give you some guidance if you had something specific in mind.
I’m pretty sure you propose an idea and if you were very fast to do it and they liked it you’d get accepted, and then you’d be able to create services. it’s been months since they last accepted ppl