#1 Insectothopter

#2 Fountain Pen Concealment

#3 Pigeon Camera

Covert intelligence existed long before the CIA, and we are all familiar with it today. General George Washington was a master of this important skill and used it during the height of the Revolutionary War.
As the Commander of the Continental Army, General Washington used invisible ink as one of his main intelligence tools. As the name suggests, the ink would disappear and require another mixture to make it readable.
#4 Office Of Strategic Services Letter Removal Device

#5 "Silver Dollar" Hollow Container

#6 Microdot Camera

Now, some of you may be wondering what makes the invisible ink work. Fortunately, this information is no longer classified, and the CIA even published the ingredients on its official website. You can make this right in the comfort of your kitchen.
To make the ink itself, you will need a “weak solution of starch” and a “tincture of iodine.” Once that bluish ink fades, you will need five grams of potassium iodate, 100 grams of water, and two grams of tartaric acid to make it reappear.
#7 "Belly Buster" Hand-Crank Audio Drill

#8 Radio Receiver Concealment

#9 Robot Fish "Charlie"

endurance
maneuverability
depth control
navigational accuracy
autonomy
communications status.
The UUV fish contains a pressure hull, ballast system, and communications system in the body and a propulsion system in the tail. It is controlled by a wireless line-of-sight radio handset.
Apart from spy gadgets, the CIA also used propaganda campaigns to influence a population’s behavior. They primarily used three types: white, which used gentle persuasion; grey, which was mysterious in nature because the source was never identified; and black, which was misinformation that identified with one faction but was actually from the opposition.
An example of white propaganda was the leaflets that the CIA airdropped during the Persian Gulf War. It happened right before a bombing by the Allied forces to alert civilians and give them time to evacuate. At the same time, it urged opposing military units to surrender.
#10 Elephant Counter

#11 Escape & Evasion Survival Kit

#12 Lithium-Iodine Battery

But since we are on the topic of gadgets, the CIA also used certain items to open, read, and reseal letters and packages without the recipient’s knowledge. These “flaps and seals” kits were prevalent in the 1960s and were available for “beginner” and “advanced” users.
These days, you can buy these devices marketed as a “CIA letter opener” for $9.99. How times have changed.
#13 "Dead" Drop Spike

#14 Seismic Intruder Detection Devices

#15 Tobacco Pouch Camera

Let’s flip the discussion over to you, readers. Which of these CIA spy gadgets caught your eye the most? What do you think drew your attention? Share your insights in the comments below!
#17 Modified Makeup Compact

#18 Minox B Camera

#19 The "Flyaway Kit"






