All of my computers are just numbered from System 1, currently to System 25 (even though not all are in use, nor are they in any kind of order around the house, just the order I got them and I don't re-assign numbers). The actual network name of each system is S1-S25, this was done years ago to simplify networking on Windows, since Network Neighbourhood never worked properly and I just kept with the naming scheme.
I think I need to rename all the drives on my Macs though. I don't normally access more than one Mac at a time via the network, but recently I had to and of course I had 2 network shares called exactly the same thing in the Finder, very confusing. I'll probably just rename them something like S1 HD - S25 HD. The PCs in my collection already use a similar HDD naming scheme.
Not very creative really, but saves any confusion.