I was Remembering videogames that had used bunker units such as pillboxes and sand bags but actual sandbags are way too heavy...I went to nearby Home depot and noticed some really huge styrofoam panels at a realy nice low price.
the Idea is to use this panel material to assemble ultralight mini bunkers that can be moved around easily so as to change game settings.
This item cannot be assembled at home because it will end up being too big to transport.
It will go up fast and easy, just need silicon rubber cement and toothpicks for pegs! It sets and drys in 1 hour and permanent after 6 hours and strong enough to absorb airsoft bbs if constructed with thick walls, yet soft enough to always carve and alter.
spray paints on this item requires that it cannot chemically alter the styrofoam so it must be safe for this material.... Your fort can be any shape, style as long as it is not so thin walled that it can be punctured, I was able to punish this with some friends, it actually works!
I take into acount that we must always stash away this item or else it will be vandalized or stolen.
The photos here are of a mock build test at the home depot.- Think giant legos!