We have carpet in our schoolroom, which is in the finished basement, so no getting hardwood or tile. What can I use under the desks and painting areas that will be easy to clean (I’m thinking paints, Playdough, markers, glue, etc) and that won’t move around all over the place? I was thinking office chair mats, but they are much too small for the areas I’m looking to cover (and expensive!). I have one space that is 6.5′ x 5′ under 2 painting easels, and then there are their desk areas – approximately 7.5′ x 9′, unless I rearrange their desks again, but it’s working well with 2 separated out from the other 2, kwim?. Anyone have any ideas, or something you do that has worked well?