THIS INSTRUCTABLE WILL BE ENTERED IN THE US OF EFFICIENCY CONTEST. So vote.
Step 1: Parts and layout
Beverage bottles- I used a water bottle about 2 inches diameter and 8 inches long after cutting off the top . A scissors can easily cut down the length .I used a strong shears for cutting the bottom.
Best string is a 1mm dia.plastic cord I found in an craft store for under a dollar. It should be stretchable. Stretchable string gives a counter-rotation after the wind winds -up the string and stops.
Glue can be hotmelt but I used Goop Glue. It is slow in cure [one hour] but very strong. I also use fish line illustrated here.