One way that works well for me is to make some sort of strap or hanger that you can wrap around your plane in away that it does not do damage and then hang it from the rafters in the ceiling via a nail.

Some other ways I have seen are taking the wing off the plane and hanging the fuselage by the tail feathers on a rack with posts sticking out. Then for the wings you can build another rack out of pvc piping or something. You would make it go up vertical and have a set of posts sticking out which you would rest the wings on. Depending on how many sets of posts you go up, you could build it to hold as many wings as you need.

I dont have any pictures right now but I am sure someone else will post pictures of something similar.