I'll tale one of those Gepard AA tanks, once Ukraine doesn't need them anymore. You can drive one those to Walmart for weekly groccery shopping! And you propably din't need a concealed carry liscence.

Edit: I once saw people live firing WW2 anti-tank artillery somewhere in Nevada or some similar, desert-ish place. So, if a modern Gepard is out of the question, maybe a WW2 8.8 flak cannon would qualify as a historical collection piece?