It is important to keep the right materials on hand.
A 1 Gift Container of Holding Power used by Victor Vale, created by LiteraryAdventures.
The Essence Keeper is a large medical bag made of durable polyester and nylon. It has a dull black, worn appearance with red stains along the edges. A zipper goes around the outer perimeter. It is approximately 24 inches wide and 12 inches long.
Its storage area is 12x times the normal space that container would have. Objects stored inside weigh their normal weight divided by 12x.
Living creatures can be stored in your container, but they will have access to the items inside and may attempt to break free, destroying the container forever.
To open the container, Victor must feed it his own blood.