I've always wanted a secret room and a secret tunnel. Not for any particular reason other than it'd be really cool.
I’d want my secret tunnel to lead to a secret exit point, or possibly into a sewer system or an abandoned subway system or some other preexisting underground network. Rambo dug a secret tunnel network to fight his enemies in that shitty new movie where he fights a bunch of Mexicans. I’m more inspired by something Batman would have, or the ninja turtles.His bunker video is one of the best on YT