NEMA standards make appearances in a number of places—lighting, medical imaging equipment, motors, and many other product categories.
I recently heard about a surprising use of a NEMA standard—a dishwasher safe, waterproof computer keyboard. The company says the products are manufactured to NEMA 4X specifications. This refers to NEMA 250, Enclosures for Electrical Equipment (1000 Volts Maximum).
I haven't purchased one of the keyboards, so I can't vouch for their ability to, say, protect against ingress of water, but I do like the idea of a way to really clean out the accumulated debris of office life.