I'm still working my way through my stash of 1/72 Hasegawa kits I scored off eBay. I've just about finished the major components for a diorama of a Ki-43 Hayabusa ("Oscar") being maintenanced at a remote airstrip. I'm using Hasegawa's Isuzu Starter Truck kit with 3 figures (I modified the driver figure slightly) and bomb cart, Hasegawa's Ki-43, and a scratch-built shed made from some HO scraps in the bottom of a bag of stuff I bid on from eBay. For a base, I'm using an AMT/ertl 1:18 scale car display case landscaped with some model train stuff I also got off eBay.
After this one, I'm going to finish a diorama of a crash-landed Me-109 I started a year ago, also mounted in an AMT/ertl 1:18 scale car display case (these cases are wonderful for diorama-making - the clear plastic protects the models from dust and are stackable to save on desk footprint). Then I'm going to start either a P-51D diorama using Hasegawa's P-51D kit of Col. Meyer's "Petie 2nd" and Hasegawa's "Check Point" guard tower; or an F-14A on cat launch using Hasegawa's F-14A and Fujimi's "Flight Deck Crew".
I gotta admit, an airplane model looks a lot more attractive when its used in a diorama, even if you just do a quick replica of a runway or tarmac or something.