Goal:
How to create a simple sheath for a knife?
Answer:
Take two pieces of leather of equal size, use a box cutter to cut them to size, sew some thread through the perimeter to secure them together

Goal:
One wishes to have a multi-functioned belt.
Answer:
One could make a parachute cord belt.

Goal:
Best way to spin a cylindrical object.
Answer:
Spinning a cylindrical object entails the use of two hands and not one.

Goal:
How to glue your saw blade attachment together?
Answer:
Use epoxy or super glue, glue the clear plastic to the plastic bottle.