Our local barber has a motorbike for kids to sit in while they get their haircut. Couldn't tell you from experience, though, because my boy's got long hair (never been cut, actually) and DP is putting the hard word on me to take him to said barber to lop it off! I have wondered if he'd have a negative reaction to haircutting attempts, though, so I will be keeping these other suggestions in mind (like the one about watching DP having his hair cut).