I have created a simple No Connection symbol for Eagle CadSoft.
At the moment I have only 1 symbol/package included in this library and that is the ‘NO CONNECTION’ symbol. The intent is to add more things as I come across it.
It is quite simple to use, it simply places an ‘x’ on the schematic. There is no PCB footprint (as there isn’t one) so it is purely for visual aesthetics.
I’m surprised that Eagle doesn’t have this in one of their default libraries.