Here is the simplest project you'll ever do. All you need is a stake type solar light, a nice looking glass jar, and a bunch of marbles. Here's your chance to display that geeky marble collection you've been saving.
Step 1: Disassembly
Start by twisting the cap off of the solar light. This is the part that holds the solar cell, the battery and LED. Discard the stake and plastic globe.
Step 2: Put It Together
Fill the jar with the marbles. Transparent ones are better than translucent as the light will penetrate and reflect more efficiently. Put the solar cap on top of the jar and wait for night.
Step 3: Enjoy
You now have a unique garden accessory.