I don't sit in blinds with my style of hunting but funny story- When I was about 12 My buddy and I found a guys deer blind while we were fishing the river near our home. This was out of hunting season so we figured we would climb in a check it out. It was a nice box blind that was pretty weather tight. Inside we hit the 12 year old boy jackpot. That guy had years and years worth of playboy, hustler, etc stacked in a corner. Had to be 200+ of them. We made a lot of fishing trips that summer lol.
As far as sitting in the dark, I like cope, coffee, and silence. I love to listen to the animals as the first light starts to show in the sky. It's pretty amazing what you can hear if you focus.