*This was entered into the pocket-sized contest, Mad Science Fair, and Make ti Glow Contest (you'll see why in step 4). Please vote if you liked it... thanks!
P.S. I will just show you what I did. Due to the flexibility of this, you can do anything your imagination desires.
Step 1: Materials
-casing (from aluminum foil to a small cardboard box to pvc pipe to...whatever you want, basically)
-battery (battery should be almost dead to prevent the motor from going too fast.)
-motor (any size, power)
-any circular object with a hole in the center (for the motor to go in) ( I used the bottom of a soda can with edges bent in)
-action figures, small objects, etc.
-hot glue (recommended)
Step 2: Join Motor and Battery
Hot glue or tape the wire to the side of the battery inside the casing, and lead the other wire outside.
Step 4: Add Figures to the Merry-Go-Round
Anyways, hot-glue or tape the things you used onto the base.
You can also add LEDs to the base and use a not dead battery, and see circles of light