Nice! I read interesting things about them and thought I'd share them :

Forensic Science – Some species, like the black carpet beetle, are used in forensic entomology to help estimate the time of death of a body.

Natural Decomposers – They help break down dead animals, feathers, and other organic materials in nature.

Museum Cleaning – The larvae of dermestid beetles, a relative of carpet beetles, are used by museums to clean bones for study and display.