The Monkey Hooks go anywhere and hold up to 50 Lbs. (they make some heavy duty ones too).
Just put the MH in the wall, make a loop with the fhishing line, loop it around the wing and in less then a minute your plane is on the wall.
On their site www.monkeyhook.com you can see a monkey ( a chimp) installing one in a wall.
I have 8 plane and a ton on 1/18 diecast on walls and never a mishap.
I guess you could use them to hang pictures and mirrors.

If you don't like it, it only leaves a tiny hole that you can cover up with a bit of caulk and the "boss" will never know.
HomeDepot and Ace sell them for about $2.99 for a pack of four, but after a while, you will be making them out of coat-hangers.




