My family has the same problem every year when it comes down to buying stuff for my father. His birthday is the 21st and Christmas is just 4 days later. He's got plenty of hobbies that we could buy stuff for, except either the next best part for it is over $100 or he'll need it and therefore go out and buy it. Anyone have suggestions for what to get the man who will buy himself stuff up until the day before his birthday?

If it helps, he's into computers a lot, he's going to be 62 this year, still works in a business casual type environment.