Paperweight / conversation starter. As long as you know it’s not real, it’s just a cool chunk of brass.

Replicas of Cobalt-60 sources can be got on Ebay for as little as $12.

Forgiveness for my pedantry, but pretty sure a greeble (or greeblie) is the individual plastic details that they would glue on to create the texture, not the texture itself.

You wouldn’t say a texture is “greeble”.

Edit - and if you’re talking 3d modeling, greebling is done during sculpting, it’s not a texturing step.

No, but I did take the 4 or 5 Oreos I would eat in a sitting, crumble them up, and put them in a bowl of milk like cereal.