Summary

The objective:
1) Easy-print and paint buildings
2) Minimal storage space
3) Travel capability

I believe I've achieved all three.

These are simple buildings that nest and are hollow. They're meant for Alpha Strike specifically. Print them upsidedown for maximal ease. These are intended to be easy to print and paint and readily nesting. In total, within one of the large 4x4" buildings, you can store:

-1x 4x4x4" Large
-3x Square short buildings
-9x Tall thin buildings
-27x Small buildings

You put three small buildings into each tall building, then three tall buildings into each short square, then three short squares into the biggest building. Photos are meant to show what is inside one "brick" as I call them.

Painting: again, I intended these to be super easy. Prime them black and then hit them with gray somewhat erratically. You can do more to make them prettier but the point here is easy of getting something on table without taking up your whole room with terrain. Two bricks worth fills out a 3x3' table decently. I'd estimate 4 would fill out a 6x4' tables' worth of buildings.

I'll be expanding this with a paid set which will be linked below when complete. It will add garden tiles, parking garages, a road system, and other city elements that will fit inside the large buildings. One of the images above includes the elements I've developed to date. Again--these are all meant to be easy-print, easy-paint. My hope is that 6 bricks, which should take up an 8x12x4" rectangle in your storage space, will fill out a nice looking 6x4' table. This should be great for enabling tournaments or even just making it easy to play on the go.

I played a game with my son in the airport during a family vacation (photo also featured across two map sheets for ease of travel). I was able to bring everything in my backpack alongside my mechs, tokens, measuring tapes, and map sheets. In that same backpack I had my Switch, laptop, iPad, and snacks.