Shaky ceiling fan

If your ceiling fan is shaking due to instable blades, attach a clothespin to the edge of one blade (halfway from the tip), adding some weight to it, and start the fan on a slow speed. If the vibration continues, repeat the process to the next one until it stops and you find out which blade is weak. Fix the problem by removing the clothespin from the fan and gluing one or two coins to the top of the blade to bring back stability.