The simplest way to keep a recipe open while prepping a meal is to only buy cookbooks with coiled bindings. The second simplest solution? This no-frills -- but highly effective -- tool called the Hold, which is basically a heavy bar of stainless steel with a strategically placed bend to hold the binding open.
Unlike a cooking app on a tablet, the $US34 Hold never needs charging or syncing. It simply relies on good old-fashioned gravity to prevent your cookbook from closing on its own. And cleanup is a breeze. When you're done in the kitchen you can either hang the Hold on a wall, or drop it in a can alongside your other cooking implements -- it doesn't take up valuable counter space, which could be its biggest selling point. [Rare Device via BLTD]