Goal and options: How to make a bench?
output answer: Take a plank of required strength and measurements, fix 4 legs on to the four corners of the plank using nails.

Goal and options: To remove crud from holes in a chainsaw
output answer: Use a wood screw

Goal and options: To cut the ceiling for a club house made out of cardboard.
output answer:
I use another cardboard to cut out the roof plate. If you don't have a wide enough piece of cardboard, then just glue several parts together.