On the weekends I sometimes scrap all day both days (if I can get away with it). During the week I try to do an hour or so after dinner every evening, how long depends on how close I am to finishing a project. I find I'm not all the creative after working all day and have a hard time organizing a lo. I prefer doing cards during the week.
Whenever. I like to think about scrapping in the AM and do the actual scrapping late morning/early afternoon. Theoretically after the chores are done.... in actuality it's often instead of doing chores!