|From left to right: Shooting Board, and two Bench Hooks|
HelpersHolding wood still while you work on it is step one. Bench hooks, holdfasts, vises, and clamps hold wood still. Making square cuts is step two. The shooting board has a 90 degree fence so you can plane the end of a board squarely.
I had some scrap plywood so I whipped these up in a few minutes. They work. As that was all the thought they required, that's all the thought I put into them.