The CIA's SPY-Fi Archives is exhibiting a nice collection of spy gadget props from the Movies and TV. Here is the cigarette case radio from season 1 of The Man From U.N.C.L.E.
An ordinary-looking cigarette case. Flip open the lid and you see the top of an ordinary pack of cigarettes. Slide out the pack and discover that it is actually a cleverly disguised radio transmitter.
This was the imaginative gadget used by U.N.C.L.E. agents Napoleon Solo and Illya Kuryakin for all of their international communications during the show’s first (and part of its second) year on television.
Link via The Day they Tried to Kill Me