My friend's unusual hobby is beekeeping. He has several beehives in his backyard and takes care of them very diligently. He loves learning about the behavior of bees and the process of making honey. My friend often participates in local beekeeping events and shares his knowledge with others. He even creates his own beeswax candles and lip balms from the honey produced by his bees. It's fascinating to see how passionate he is about his hobby and how much he enjoys spending time with his bees.