Well this isn't about my kitties. They don't hide weird places but because they are all black, if they hide anywhere dark or on a dark surface like the couch I almost sit on them occasionally!
However my brothers cat has learned to open the bottom draw of his dresser. Happens to be his underwear draw He empties the draw with such force that he says his undies are sprayed all over the room!! He got home one day and couldn't figure out what had happened until he tried to close the draw and it kept bouncing back open!! (Kitty is a bit "fluffy"!) He heard a small meow as if to say "HEY!! I'm back here!"
He still comes home to strewn "draws" AND and an open one too!