I don’t necessarily do it with tips, because I don’t really know those people, but I have a similar situation. I make good money at work and am very lonely/isolated in my social life, so I don’t have a lot of places to spend my money. But around the holidays I like giving big expensive gifts to my family and the few other important people in my life. They always think it’s overboard in terms of what I spend but I just really like the feeling that my money is going to make someone happy since it doesn’t really do much for me. I make sure to remind them that I’m not keeping score and not expecting them to give me something of equal value. I just like the experience of gift-giving.