Step 1: Supplies
Fishing line or thin monifilament (clear thread)
Lightweight objects to hang: witch hats, bats, spiders, etc.
a bamboo skewer (most are around 7/64" wide)
flat toothpicks (again, most are around 7/64" at the widest)
a sharp knife
7/64" or 1/8" drill bit and drill/dremel
Step 2: Attach the Hanging Line
Then cut into one edge along the middle of your toothpick with a knife. Don't saw into it very far. You don't want to split it in two; you just want a place for the monofilament to catch so it doesn't slide off the toothpick.
Next, measure the length of the monofilament to be the approximate distance you want the object to hang from the ceiling. Tie it to the toothpick, making sure that it gets caught in the nick you made.
Step 3: Hanging Your Stuff
Flat toothpicks have an end that's narrower than the other. Push this end through the hole you made in your ceiling. To get the toothpick out on the other side of the hole, immediately push it through with the flat end of your skewer. Carefully pull out the skewer and your object will be secured.