As I get older I'm finding that one continuous 8-hour sleep doesn't happen anymore. Not often, anyway. But the key is, I've stopped worrying about it, just accept it as ...whatever. But my tolerance for laying in bed and and tossing and turning is about zero.
So when I can't sleep or wake up for whatever reason at 2:00 or 3:00AM, I get up and read blogs until I'm sleepy again. There are millions of them out there, and I've found some really nifty ones that are worth bookmarking and coming back to later.
There's no way I could or would want to be "productive" during my nocturnal wakeups. Reading blogs is a low-stress, inconsequential way of passing the time until I'm sleepy again.
Maybe if you suggested some good blogs to read, I'd give it a try.
I had 5 young children for 17 continuous years who woke me up at least once a night. I remember wishing for just one quiet night of peaceful sleep. Now the house is quiet and I can't sleep.