What do you do when you are alone and out of internet?

Listen to music mostly, or play some DRM-free game.
You are refering to PC activity when internet dies right?

I go through the crap-load of movies and TV series I've got stored on my HDD

Go to the place that has internet.

I scheme and plot.

Reading (either a physical or an e-book) or listening to an audiobook.

Something...useful

Read, or do non-leisurable things that need to be done

Play my PS Vita.

Experience depression, mostly.

I'm never out of internet so I can't relate :(

Magic The Gathering :D

I...I....I Attempt to fap then re-realise i have no internet, and fall in to a deep depression that i cant fap out off.

What about you?

What voices tell me.

I installed Minecraft - Pocket Edition on my smartphone for just such emergencies!

Those of us who have small children never run out of things to do during "free time" (assuming we get any).

I've always found blackouts to be a useful reminder of what is truly important in life. The lack of electricity for a day or so gets me focused on important skills I tend to neglect otherwise, and I remember that most of the world has no electricity or gas or running water. People have successfully lived thus for thousands of years.

programming my game :)

Sleep.

Panic attack.

I draw.

i read a book, or listen to an audiobook or zen meditate

I talk with imps

Steam has offline mode and I have about 350+ games installed. I'm good for the next five years. :D