Sounds like something my Dh would do. The only time he picks up/throws out something is if i was saving it for something. I leave it out be cause i know he won't touch it! Wrong again. And if he comes in my sewing room to clean, i will just tell him that he has plenty of things of his own to clean- like the garage, for example. ( people are always taking his stuff and not putting it back!) ha ha! hope that your cutting mat comes back to life! And God save us from helping husbands!