Ask HN: ways to enable gifting in your app?

'tis the holiday season, and many of us might like to integrate gifting in our products. Bonus points if it is something that can be integrated in a day.

ps: although all ideas or showcasing how your app enables gifting are welcome, for my demo i'm actually interested in a p2p api where personA can gift money to personB to buy a product my app recommends, without getting me involved in the t'xion

happy holdays ~B