If you answered with clamps, you would be correct, and are prob a woodworker, or welder/fabricator. I have a multitude of clamp styles - C, F, bar, quick grip (one-handed), wooden hand screw clamps, spring, pipe, maybe even parallel clamps. Those blue-jawed Harbor Freight aluminum bar(?) clamps are reinforced with wood so there is less flexing (not zero flexing, but definitely improved rigidity over stock). A coupla pipe clamps, both in 1/2” and 3/4”, straight-edge clamp, a table vise or two, and possibly more. Prices range from $5-15 each.
Please leave your name, number, and what day/night and time that you’d be able to come get them, but only if you’d like me to respond back to you. Thanks for looking, and have a great rest of your day/night