I don't usually play RIGS long enough to warrant it being an activity. Opening a bundle for about a minute and a half seems to fly by in just about 90 seconds or so (give or take a minute due to me not caring how long time actually is).
I remember when I was playing like 24 Famestar Masquerades, I was listening to Sonic Adventure 2 music (the 2 player mode music and the stage select music) while doing so, because that RIG reminded me so much of Sonic Adventure 2 in a way.
Edit: I play RIGs out of boredom and if there's nothing to do and I normally don't try to win anything good. (And the Megalomaniac and ChromaiChaos victories proved it to me by both giving me the megane Anurla item...)
Whenever I play RIGs I'll listen to something that relaxes me (Like Tool, or God Module, maybe even BVB or Suicide Commando), and I'd be talking to my significant other, as well.
But I don't really play RIGs that often, as I just sell them.