Cisco N9K - Create a "dummy" port?

Looking to create a "dummy" port temporarily on a Cisco Nexus 9K.

We are spinning up a cross-connect in a co-location datacenter, and want the remote technicians to be able to plug in a cable, and see that the link comes up physically (LEDs) but we don't want the port to connect to anything.

By default, the port is on VLAN 1, which I generally don't want people plugging into.

I know I could make a "dead" VLAN, and make this an access port, but is there an easier way to "create an interface that connects to nothing"?

Thanks!