Ever think it might be cool to own a piece of the history of flight? Well, the Smithsonian’s National Air and Space Museum might be able to help you out right now. The museum is attempting to get rid of a bunch of items in its collection—totally free of charge—in an occasional process known as deacessioning.

Among the items listed are wing assemblies, rocket valves, engine parts, spacesuits, and even whole satellites, helicopters, and rocket engines. For instance, there’s a full-scale replica of Explorer 1, the first U.S. satellite to orbit the Earth. There’s also a Sikorsky UH-34 helicopter that needs to go. Even though the UH-34 had a long service history with the Army, Navy, and Marine Corps, an Air and Space official told WJLA that the model the museum currently has in its collection never saw combat. Museum visitors, the official said, should see one that had a bit of action:

But in the case of the UH-34, it’s more about the helicopter’s story. It was a trainer that never saw combat.

“If we are going to tell the story of Marines flying in combat, we want an aircraft that flew in combat, so we are actively looking for a replacement,” [Museum Specialist Roger] Connor added.

One catch. Not anyone can just walk up to the Air and Space Museum and ask to go home with a NASA helmet or a piece of a rocket engine. The object transfer is only for other museums and educational facilities that will keep the specimens in the public domain.

And many of the objects to be given away are in no shape to be on display right now. The Air and Space Museum has previously offloaded its artifacts to other facilities that have then restored them and put them back on view. In 2009, it transfered a World War II-era bomber to an aviation museum in Georgia which fixed it up.