I pack a lot into my week. I have to in order to get everything done.
One way I make that happen is to find three good hours. I use this time to either work on things that aren't glamorous, or to spend time focusing on things that are super fun. Either way, I find three interrupted hours and milk them for all they're worth.
For me, that's early on a Monday. By arriving at the office by 6 AM, I can complete everything before most people have opened their inbox.