Step 1: What You'll Need
2. A string of solar holiday lights. I used icicle lights (25 to a string) from Target
3. clothes pins (optional)
4. soldering iron (or for a no-melt version adapt using No-Melt Instructions)
5. zipties to make hanger
6. hot glue gun to anchor lights (optional)
7. outdoor work space; fans for ventilation
Step 2: Light Holes
Using a hot soldering iron, melt a hole 1/2 - 3/4" in the bottoms of 25 cups. Test first hole to make sure you can slide icicle light through.
Divide 50 cups into two groups of 25, distributing the cups with holes equally into the two groups. You're ready to start building.