By using old empty plastic water bottles, you will never need to buy small plastic funnels again!
You will need regular sized water bottles (empty)
a sharp knife
Step 1: Take a Plastic Water Bottle
Take a regular small water bottle and cut the bottle about a third way down from the top and recycle the lower portion. You will be using the top part of the bottle only. You can recycle the cap.
I cut my bottle on a cutting board to avoid damaging the working surface.
Step 2: Be Careful When You Cut
When cutting the bottle be sure you do not cut yourself.
Step 3: Behold Your Funnel
Another bottle saved from the landfill and a neat funnel for you to use as you will.