Has anyone thought of a good table clamps

[Jdd]

Has anyone thought of a good table clamps, I’ve been thinking about a couple ways but can’t figure out a way to keep them from getting ran over. So far I’m using c-clamps but I can only use them on three sides. I’ve also thought of magnetic but if it gets in the way and gets cut its toast.
Never mind I figured it out I wish I would have left more meat, but I have to remember there to hold down not clamp down.