Something I didn't think of is wargaming models. There are some in approximately 1/56 scale to support Warlord Games Bolt Action! WW2 miniatures game. There is a small line of vehicles available, and Italeri has started to make some kits specifically for this game, too.
But they are still kind of pricey, and small, and are not top level detail. That is forgivable to a degree, as they are intended to be frequently handled game pieces, where 1000+ parts just aren't appropriate or necessary. While limited, they are an option for bigger than 1/72 and smaller than 1/35 though, as long as you don't mind only the major vehicles of WW2.
Just for an example, here's what's out there for the US Army right now - us-store.warlordgames.com/.../tanks