How to Make Your Own Spy Gadgets?

Spy gear and gadgets are fun to make and to have but, you’ll always want to make sure you’re using them for legal purposes or fun. There are kits available to make and to convert everyday items into spy gadgets. Disappearing ink is a favorite. Dissolve 1/10 gallon of thymolphthalein in 2 teaspoons of rubbing alcohol. Next, stir in about 90 milliliters of water–you should have a cloudy solution. Add approximately 20 drops of sodium hydroxide until you get a dark blue. Try writing on cotton for quick results. Once the message has disappeared use ammonia and a cotton swab to reveal the message again. To find more information click here: