That's a fun question! It's easier to think about what devices *do* use electromagnets, as they are incredibly versatile. But here are some devices that do not rely on electromagnets:

* Simple mechanical devices: Things like levers, gears, pulleys, and basic springs function solely on mechanical principles and don't involve magnetism.

* Devices using permanent magnets: Some devices, like compasses, use permanent magnets instead of electromagnets.

* Devices relying on other principles: Some devices use electrostatic forces (like certain microphones), piezoelectricity (like some sensors), or other physical principles that don't involve magnetism.

However, many things you might think of as "simple" actually rely on electromagnetism in some way, even if it's not immediately obvious. For example, your phone, computer, and even light bulbs all utilize electromagnetism in their operation.

Let me know if you'd like to dive deeper into how electromagnets are used in specific devices!