Having been a teacher, and knowing lots of others, something consumable is nice. Gift cards, lotions, etc. We usually do Bath and Body Works of some kind. I usually get it when it's on sale for about $1.67 with coupons. We still only do one per teacher, unless it's one one of my sons really has an opinion about. This year we are just doing gifts in a jar. If you google it, there are lots of options, and they vary a lot on prices. Money isn't as much the object, as much as just knowing you appreciate us. :)
We have two office staff members who are on our list this year as they have done a lot for us.