This is a "must have" if you fish... there's nothing worse than seeing discarded fishing line while out fishing or laying in the bottom of your boat. Discarded line can also impose a threat to wildlife. These are a few waste line collectors that can easily be printed to help contain any waste line you may have (or find) while out fishing.
The larger version uses (2) 6/32"x1/8" set screws to hold the barrel in the body while the smaller one just snaps together (be careful as the tabs are fragile though on the smaller version) They both use a piece of the hook portion from some sticky back Velcro to grab the line. A split ring or clip can be inserted into the top while printing.
To use - just hold the line against the hole and then just spin the barrel to wind in the waste line. Works great for long or short pieces of discarded line. When full remove the barrel from the body and cut along the groove of the barrel to remove the old line. Simple as that.