First time I flew I was 21...Been picking up steam though:
If only helicopter rides could help here too
If Fin Del Mundo is something for you, Build A Bear I believe also stamps Passports by each of their stores
Does RZE count as unique? (Only 3 airlines fly there)
No! Probably more chasidim flew there than TLV. And regardless that would belong is airports thread, as Poland is certainly not a unique country.
It does say the name of the city on the stamp though.