A couple of years ago, I found these online and asked my school to buy a couple for my classroom. Well, apparently, they liked my idea of using them as a word wall so much that they bought several and gave them out to anyone that wanted them for their classroom.
At the beginning of last school year, I bought a pocket chart stand to hang it since the Command hooks wouldn't hold it on my freshly painted walls. I used butterfly duct tape to divide it into 3 subjects. That summer, I had bought a lot of word strips from Dollar Tree, so an idea was born. I put them in "rainbow order" because that's what I do...I know, OCD! (I passed it on to my girls, too! They always put their crayons, colored pencils or markers in rainbow order before they could start coloring!! Hope they pass it on to my grandchildren, too!)
There are even 2 of them in my medicine cabinet at home. I look for more every time I go into Big Lots, but haven't found any lately.