Abstract: A container assembly comprises a V-shaped container having a V-shaped cross-section and being formed from freezer-safe material, and a support base having a V-shaped groove sized to received and cooperate with the container thereby to support the container during filling with freezable liquid. Also disclosed is a freezer container support structure comprising two or more plates and at least two spaced support members. The support members are adapted to engage the plates in spaced locations along the support members, to maintain one or more freezer containers between the plates during freezing of a freezable liquid contained in each said freezer container.