Step 1: Materials
Main support: Y-ed 1-2 inch by one and a half foot stick
Lever: 1 foot by 1" strong stick
Toggle 3"-3/8 inch twig
Trigger inflexible twig as long as the rock
All the measurements are very flexible and are just general guidelines.
Step 2: How it works
Step 3: Tie it together
Step 4: Set up main support
Step 5: Set up
Now bask in it's glory!