What are you asking for? A browser plugin?
I know we already have a 'subscription' module but other communities relies on donations.
Ideally it would be good if someone could donate via the forum, then on the callback, it creates a topic with the donation details in a category of your choice.
We used to have one on our IPB forum. (https://www.devfuse.com/products/53-donations/)
Would be willing to pay, if someone can make a decent offer.