Periscopes and inspection mirrors

Not satisfied with my inability to X peek but not cast, I’ve been trying to create a telescopic inspection mirror to peer around corridors and take out turrets with magic missile. I’ve been building a foldable ‘vehicle’ with folding light frames but to no avail. No only is it hard to manoeuvre into position, it doesn’t allow me to see ‘as if I were standing where the mirror is’… I even added a folding seat to see if that made a difference… Nope. Any suggestions as to how I can get this to work?

And I don’t suppose there’s any way to get it to work as a periscope to peer over walls or see farther?