These days I don't do as many airplanes as when I was younger.  And, as far as airplanes go, I split my building between flying models and shelf display (plastic?) models.  Even then, the flying models are divided between radio control and freeflight (especially rubber models).

Here is a shelf display model I just finished, a Paula kit, Lockheed Orion, in Northwest Airlines livery.

Here is a Curtiss Army plane, a P-12 from the classic " between the wars era"

Here is the Williams Bros.  Ford Flivver.  I like Williams Brothers kits.  Maybe not the best kits, but with some work many build into very nice models, and they offer such neat subjects.