I'm not a big fan of giving money but as the kids get older, I get it. They want money because they are saving for big ticket items or they just want cash to have in their pocket.
What I do try to do is make getting the money a little more fun. This time, I taped it together at the ends to make a long roll of money. I usually tape the first bill to a sucker or something so they grab the sucker and the money comes pulling out.