Both mattresses from the top bunk are thoroughly nasty, and smell very much of Wet Bed. (I wish I'd had the foresight to sniff those mattresses when I was throwing out the twin mattresses that I formerly had, but alas...) Therefore, they shall be History. I have currently parked the salvaged couch cushions up there in the top bunk. The cats are very much enjoying this.
I have improvised a privacy curtain for the bed for when there are random strangers in the room, and/or for when my bed's just a mess, and/or for blocking of ambient light. This is the same large piece of fabric that was the curtain for the Little Fayoumis and helping keep the light out of his eyes when he was trying to sleep, held on to the top bunk rail with a few strategically placed shower curtain rings, the sort that snap together. The effect is tidy and very, very black, as the fabric's black, the bed is black, and the shower curtain rings are black. ...This is altogether unsurprising, of course.