Carolina Keeper

The Carolina Keeper might be the best thing ever invented.  It's a simple piece of hard plastic that has a small slit through the middle.  If you hold it in your pliers with the slit perpendicular to the pliers and squeeze it, the slit will open up enough so you can slip your fishing line into it.  

It's perfect when you don't want your weight to slide down to your hook.  You no longer have to use a swivel and it saves you having to tie two knots.

8 per pack