Top left: The Swedish Airforce engineer cap. (Bought at a surplus store. in the late 90's)
Bottom left: 1960-1990's Army helmet. (Bought at a surplus store in the late 90's.)
Middle: Swedish armed forces 'Boat cap'. I inherited it from my grandmother when she passed.
Middle right: Not sure what that ugly thing is other than it's most likely 1980's and Swedish.