Now that DS is away I threw out three rugs that have been sitting around rolled up collecting crumbs, lint, etc. He decided rugs trap too many germs and wanted the hardwood floor in his room instead. But he never wants to throw anything away. Trash is not taken out until Monday so if he comes home before then he may notice, or he may at some future point. I bought the rugs to go in his room when he was a child so he may consider them his. I consider them a household furnishing. We can't discuss it since he refuses to communicate with me so I am making an executive decision.
Also found light bulbs he had laying around in the guest room which I put in some empty sockets. It is liberating to do these simple things to make the house nicer. I also took down the curtains in the two rooms that had them after seeing on HGTV it is a dated look and blinds (which the windows also had) are the way to go. I don't think he will care about the window treatments.