I am not sure there are that many things that can so effortlessly move from the lab to the home office. These Test Tube Pencil Holders are unique in that way. Made of light weight, rust resistant metal they are intended for use in the lab. It keeps test tubes in order in its numbered rows, and prevents tipping by design. In the office, however, it is a beautiful way to hold your pens and pencils in easy grasp. And when turned on its side, it makes and excellent place to nestle mail and envelopes.