Seems like we use berlyium in a lot of things.

What is beryllium?

Beryllium is a metal that’s used in the manufacturing of dozens of products, including cars, computers, golf clubs and electrical equipment. Beryllium is light, non-magnetic, and a good conductor of heat and electricity, which is why it’s so common.

https://my.clevelandclinic.org/health/diseases/13807-beryllium-disease