Cheap and easy protection for solar landscape lights. Drill a hole as deep as your spade bit will go, and drop in your light. Now they won't fall prey to the mower, weed wacker, or clumsy people. Great for walking paths, or around the fire pit.
Solar Lights - DIY Quick Fix. Basically, there's a battery inside that charges the solar panel. Unscrew the head of the light and replace the battery. Will work unless the battery chamber has corroded.