Coils are used for all sorts of things, like radio's, FM Transmitters, and even generators like the Tesla Coil.
What i'm going to do is show you how to make a coil fast and easy under a minute!
Step 1: Gather Your Supplies
What you will need is:
#18 Solid Core Copper Wire
Anything to wrap your wire around (preferably a 1/4" bolt).
Scissors & Wire Strippers
Step 2: Cut About 10" of Wire
Measure 10 inches of wire, and cut it.
Step 3: Strip the Wire
Get your wire strippers and remove all insulation.
Step 4: Wrap the wire around your object of choice
I used a 1/4" bolt but pretty much any round object will work.
Step 5: Now, trim the ends and slide or screw it off