Here is another awesome wooden 3D puzzle model from UGEARS: Flight Starter is a mechanical paper airplane launcher that can send your aircraft up to 100 feet. You can adjust the angle of the wings for loop, nose-up or barrel roll maneuvers. Simply fold your airplane, attach it to the Flight Starter and push the trigger.
The kit comes with a plywood glider and two paper airplanes. It is available for under $38 at this time.