Goal and options: Make a wall calendar.
output answer: Place multiple post it notes on walls equal to number of days for current month.

Goal and options: How do you prevent your teeth from getting stained?
output answer: Rinse your mouth with water within half an hour of eating or drinking these stain-causing foods and drinks, giving them less time to do their damage. Brushing your teeth: Brushing your teeth soon after eating is the best way to prevent discoloration from foods and drinks.

Goal and options: How to cut leather to size to use as a holster?
output answer:
Use a pencil to outline the marking for the cut and cut with a boxcutter