What should I give to the "special" school bus drivers and what, if anything, should I give to the bus coordinator guy?

A few months ago, my daughter broke her leg and has been in a wheelchair. The school had to provide a special handicapped bus to get her to school every day. In the first 2–3 weeks, the transportation coordinator and his assistant were the drivers. The coordinator-guy was very helpful, and had the bus come at a time that was convenient for me and my work schedule. They were trying to get the schedule together so they could get another two drivers who had time to spare. Then it was some various people for the next week or so, and for the past two weeks (and presumably for the next week, when school will end) it’s been this guy and this woman.

I want to give something to the drivers as a thank you, as I would if she were on a regular school bus.

Should I just give a gift to the current guy and woman? Should I give a gift to the coordinator and his assistant, who both did it for the first few weeks?

I was thinking a gift card, as that’s what I gave the regular driver for Christmas. It’s going to add up, if I give $20–25 to 4 people, but if Fluther thinks I should, then I will.