As a working mom, I really appreciate having a good bus driver and bus aide for DS. He is also on a w/c bus-- he needs to be loaded and unloaded, strapped in properly, etc, and they drop him off 2 days a week right at my school!
I give homemade truffles and Dunkin Donuts gift cards--not enough for the peace of mind I get from having them, that's for sure.