“What is this beeping device inside my van’s glove compartment?”
"Looks like a tracking device. Your van may have been owned by a company that tracked their fleet, or if you financed it, the lender may have placed the tracker in case you defaulted on payments. Unless you consented to have it installed, it’s yours and you can remove it."
More likely an adhesive spreader for plastic tile, or to rough groove fresh concrete for traction.
#14 could be for keeping various plants on display. My grandmother had something similar for that, only with a few less shelves.