The stapler must be red
I don't think this is optional.
Also, a simulated office environment isn't complete without the requisite recharge points, med kits, ammo boxes, crates, grenade launchers and obviously a teleport because lifts can be really annoying to get right, depending on which game it is.
I know a few people did this - though it was back in the olden days when people didn't look at you funny for having a game server, maybe it's going to be back in fashion now and I can dig out the heap of rust in the corner of the garage... and then find there's no spares for the parts that got eaten by badgers.