We have an IP KVM that needed to be configured through its console/serial interface in order to get it on the network. Unfortunately, the original cable was lost in the black hole that is the storage room, so we decided it would be easier to make one, rather than buy a new one. After figuring out the pin-out conversion between the Cisco console cable and the Avocent console cable, I made this:

I do good work.
I felt a little uncomfortable trying it on equipment “in production,” but much to my surprise, it worked.
I’m taking it home over the weekend to do it correctly.
Where I work, we just reterminate the cable.