This jacket is water proof. Took a little over two weeks to make, about an hour each day. Also took lots and lots of duct tape and is made entirely of it. Tip to not wasting duct tape is dont do it outside where it is subject to wind and bumble bee's. :D
Materials and tools needed: Duct tape, plastic table, scissors, measuring tape, the will to not stop.
Step 1: Make the sides of the jacket.
Lay long strip of duct tape adhesive down, on smooth plastic table. Lay more strips edge over edge so it makes a sheet on the plastic table. Peel sheet up and lay it adhesive up. Cover it with another sheet adhesive on adhesive. Make sure sheet is big and can cover your side from your waist, up to your shoulders. Repeat the process for making the other side of the jacket.
Tip: Measuring tape would be usefull.