A male urinal? I've never been in that much of a rush to get anywhere where I couldn't stop at the next gas station to use the restroom <img src="/images/graemlins/grin.gif" alt="" /> I would carry toilet paper or tissues though, just because there's really no substitue for it when you really need it.
The Forester already has underfloor compartments where you can fit a lot of this stuff. Most of my tools, emergency kit, tow strap, and other stuff fit in one of the comparments, or in the center bowl of the spare tire.
If you get snow in your area, carry chains. Even with AWD, you'll can still get stuck.