It’s Identification Day this Saturday from noon to 4 pm! Bring in your rocks, bones, feathers, plants, and other finds for a Museum scientist to attempt to identify. New this year: a chance to scan your object, and receive a digital copy that can be used for later 3D printing, all while learning how scientists are using 3D scanners and printers in their work.

In addition, the first 2,000 ID Day participants will receive a miniature bust of Theodore Roosevelt, a “Tiny TR,” created with a cutting-edge 3D printer. Why TR? His legacy as a lifelong naturalist—and a friend of the Museum—is one of the inspirations behind this annual event.

Learn more about Identification Day.