While in Berlin I had the chance to visit the German Technical Museum, among its many fine collections are some of the rarer seen Nazi tools of warfare
"Biber" one man mini sub, used in the final months of the war as primarily a defensive weapon, most of the operators died of CO2 poisioning IIRC
Some type of gyrocopter which i am unfamiliar with, since it is unpowered I assume this was an invasion or clandestine ops only vehicle which allowed the occupant to autorotate in.
If anyone knows more please post.
one of the early flying wing glider prototypes I believe, i dont know any of the specifics