Aside from screaming in anger and pain, that is.
As a chubby guy I approve of doughnut feeding or anything junk/fast food related.
There’s also that folder where you keep your porn stash, though that can only keep you busy for a couple of hours and it’s no good if you have guests as they will look at you like you’re crazy with your pants down and all.
You could also try taking a nap long enough that lasts until the service is restored, even it that means sleeping for a whole week straight.
Relevant:”How I feel when I lose power for more than a day.”
Believe me, the last thing you want is to get your attention span back.