Yep, you can make your own with readily available items you may already have. If you are sitting on an extra grand or so this won't be of much interest to you, if your not, follow this link. I love do it yourself preps.
This would be a pretty cool rainy day prep project.
Gonna put a permanent link on the sidebar to this information so you can come back to it often.
This is Bullseye...OUT !!!