There is a member here that designed, built and markets a cool glass display case with a polished steel mirror as it's back. Mounted on a wood plaque, the other four sides are plexi.
The deal is.....build only one-half of your model....half a fuse, one wing and one stabe.....gear up or down.....there are instructions about how to mount it.....very simple sounding.
The mirrored surface, as your half-model lay on it is reflected and appears to be a whole plane....angle the model nose-up, nose-down or horizontal.....it appears to be floating in the box! The effect is amazing!
This, of course leaves you with an extra half an aircraft.....either parts for the spares box or build the other half flying in the opposite direction as a gift!
There would be a problem if the wing has lettering on it.....looking backwards in the reflection, that is and insignia must be symmetrical (stars, roundels etc) so they don't appear 'flipped'.
This member introduced his idea here on the forums. I don't recall where his post are, maybe others do. I'll look around for it when I can and get back to you if interested!