Comment by cookiengineer

I like to do that more subtly. If I want to have IT check on an ongoing engagement, I usually use Raspberry Pi based OUI/MAC addresses.

Other than that, I can recommend going for IoT devices like VOIP phone MAC addresses in conference rooms, because they're specifically allowlisted for everything and/or are in a different VLAN that doesn't block the endpoints.

Enterprise-grade security is always fun :D