"Two tone 3D printed object on a necklace from a youth military program in the US"
A: "Most kids who go through Starbase get one of these. The purpose is to demonstrate CAD and 3d printing, not to provide any practical result. Students are instructed to follow along with instructions to model a “space capsule” (the program is designed for elementary, so the simplicity is somewhat warranted), so every student produces an identical model. Then the instructors hand out a 3d printed version to every student."
They found many new uses.
#10 at first glance they looked like vacuum packed bats!
Shark eggs look similar to this as well.
This photo is taken in Hvide Sande (white sands) in Denmark
don't care, would have done her upside down, backwards, standing on my head, one arm tied behind my back, fact might have given my left nut for a run at her.