Well, the virtual coffee shop is the place for you. The UK charity the Meningitis Trust (who I'm doing the marathon for) have an annual Coffee Break event in March where they encourage people to have a coffee morning, and sell coffee, tea and cakes etc and give the proceeds to the Trust.
Well my friend and I are doing one entirely online. Visit the virtual shop to see our menu, tweet your order (including the hashtag #cb), we'll tweet you your bill, which can be paid through JustGiving (which takes PayPal and most credit/debit cards, so should work all over the world).
We'll then tweet you your virtual coffee.