One thing that I found desperately necessary in this classroom was relining the kitchen drawers. Most of them are lined with contact paper which must be at least one, probably two, decades old. It's worn out and faded and grimy.
Of all places, Staples had just what I needed: neon, solid-colored contact paper. At my local store they carry yellow, blue, red, and green - four of the six colors I'll need.
Nothing fancy, just clear and obvious which kitchen you're in. Now I just need to find some orange and purple contact paper, and I'll be set!