My son doen't have contact with his dad anymore but when he did, he used to go to his house for the whole weekend.
I confess that at the beginning I didn't know what to do with the silence and the solitude but after a few months (and before new man took over most of my childfree time) I had a pretty well organised routine:
Friday- Meeting with friends/dating (that's how I found new man)
Saturday Morning - Pack the dogs in the car in the early morning and go around local markets, antique fairs, farmer markets. It was a nice way to get some exercise, walk the dogs, have some adult conversations, do the shopping at a reduced price, and get a small treat for myself occassionally.
Saturday Afternoon: Take a rest, read, enjoy the silence at home
Saturday Evening: Meet with friends or have a date with myself (basically do any thing that I enjoyed and couldn't do with DS in tow)
Friday Morning: Breakfast in bed, more reading, some sightseeing away from where I live, I would normally be back by 4, will do a quick tidying up around the house, and cooking and freezing main meals for the next couple of weeks.
It was a great time. What I enjoyed the most was being able to be relaxed about everything during and after the weekend, and also not having to run around cooking after work during the week sigh*