After The Nazi's surrendered in WW II, one of my dad's uncles, stationed in Germany while serving in the US Army, sent my dad and his brother a wooden box. The box was filled with Nazi flags, armbands, goggles, helmets, whistles, canteens, etc. There was a form included that stated the items conformed to "the provisions of Sec III, Cir 353, WD, 31, Aug 1944, and the existing regulations of the Theater Commander.", and it was signed by an officer in charge of inspecting such boxes. Looking up those provisions, it looks like the items were legal to send since they did not violate the articles of the Geneva Convention.
For years these were squirreled away in my dad's attic, now they are in my sister's attic. My sister and I refer to it as "the box of EVIL". We don't really want to keep it, and have no interest in trying to make a buck off of it. Outside of throwing it in the trash, is there anything can we do that may give meaning to something that represents so much horror and destruction?
Contact local museums and see if they will accept it as donations! There's no better way to put those items to good use than to donate it to museums. Even if they don't have dedicated exhibits, many museums will still keep historical items in storage, or have connections with other groups which may have a use for those items.