An insert configured to be disposed in a receptacle, the insert comprising a bottom surface, a first top surface, a second top surface, the second top surface being located further from the bottom surface than the first top surface in a first direction, the first direction being orthogonal to the bottom surface, and a chamber, the chamber residing between the first top surface and the bottom surface and the second top surface and the bottom surface, the chamber being configured to hold a liquid, is provided. An associated method is also provided.