Awesome collection. I like the 1st hanging broomstick approach too. Anything that looks like they're flying.
I know about that dust though here in the high desert of NM. I get it
inside my house.
I thought about putting my planes in the dishwasher, but probably they would get dishspots.

I think the only way is to blow them off individually with a compressor and a blower tool hooked up to the hose.
Parked so close together like that, the enemy can easily take out your airforce with a couple of strafing runs.
