Outside of the turks head knot variants, there are few techniques that are appropriate for making paracord knife wraps. I found an image of a knife wrap that David Hopper made. It was a recreation of an old sword wrapping technique
This is great since we don't have any outdoor hose hookups! How to Build a Rain Barrel. A dual barrel system that uses atmospheric pressure to equalize the water volume in both rain barrels. Use the water from your rain barrels to water your plants.