Abstract: A clamp for holding shut and submerged a coffee filter containing coffee grounds or the like inside a vessel comprises one strand of wire formed such that an arc-shaped portion separates two arms. A first arm possesses a first jaw of the clamp. A second arm possesses a bent loop portion that functions as a second jaw of the clamp. The first jaw protrudes slightly through the second jaw when the clamp is in its free state. Pushing the first jaw farther through the second jaw expands a “window” in which an object can be placed, while bending the arc portion. After removing pressure from the arms, the clamp will release some of its stored mechanical energy, gripping and holding an object within the clamp's window portion by way of the remaining stored energy within the clamp and from the friction between the object and the clamp's window portion.