I may have to bring my 386 and/or 486 as well by the looks of it. Some of the games suggested will need a slightly faster machine.
If anyone else takes a PC, maybe a 2 play game of Doom over serial cable! 
The room in my car is vanishing quite quickly!
I do have a couple of old DOS 486 PCs
I could get DOOM on one of them and bring it to RCM
Does any of your old PCs have a network card? Both of my old 486's have a network card (and properly confiugred MS LAN Manager for DOS software) so for quicker gameplay, could do the two player thing over LAN (just need a hub/switch or a crossover cable)