I like to be alone during Saturday's. At least for a few hours, just to collect my thoughts. Everyone is busy all the time but people don't realise that the real work, the most creative things happens inside your mind and you don't have time for it. I have heard that IBM has thinking rooms inside their buildings. I don't know if creative ideas can be forced out of you like that but I get the idea there. That would be nice to have a room just for thinking.
Saturday's are the best option for me to just let my mind wander for a few hours and see what all ideas comes in. And if you can't spare at least few minutes to do that you probably have to look at your priorities. I know I would.