What should we do with this steel vault building!!??

OK, lets get some of your input here... I have the opportunity to get this all steel, 1/4 inch thick, steel roof and floor, up on skids to move around building! There are lots of possibilities for it, especially since we have the big tractor and excavator! I could make a very nice buried bunker... A simple storage building, put it inside the pole barn and also use the rood as upper deck storage, cut the door bigger (its 4' now) and bring it to Kentucky for the UTV? Buried duck pit blind, buried goose blind, buried deer blind?? Ninja stash house in the woods?? What the heck!? Lets has some fun! Put your ideas in the comments and we'll see what happens! Thanks! Kapper Outdoors, living the dream, one acre at a time.