I've always thought of a "gadget" as a "single purpose "tool", whose task can be accomplished with tools already in a kitchen, and whose purpose is really just to sound cool and generate sales".
Trust me, I have DRAWERS full of "gadgets" that I hardly ever use. Tools, on the other hand, I have as well, and use them frequently, when I cook.
Peace, Love, and Vegetable Rights!
Eat Meat and Save the Plants!