Well, it's funny but on that one day each year when we seem to "gain" an extra hour - when the clocks go back in October - I really notice that extra hour, and love it.
What would I do? I would do something creative and commit it daily to that activity. I have a list of things I want to do more of, or do every day. Probably half an hour journaling and half an hour learning or practising a new tune on one of my instruments.