A Mach 3...or 9...or whatever the hell number they're on now, a pack of blades, and a RazorPit. Gifts for Dad = done. The RazorPit, which I prefer to think of as a Big Boy Bed for my razor, recruits a patented friction technology to both clean and sharpen razor blades after each use. The result, according to Pit advocates, is a blade life extension from around 10 shaves to 100 shaves, and an average yearly blade savings of 60%. They add the reduction in discarded blades also helps the environment, though that's kind of a moot point since the only people who care about the environment are hairy hippies who have no use for razor blades or RazorPits anyway.
To use the RazorPit, apply a spurt of shaving cream to its surface post-shave and run your razor back and forth with a few smooth, graceful wrist strokes. Think Van Gogh painting Starry Night. In combination with this motion, the Pit material will extract any microscopic residue--skin cells, water, keratin, remnant stubble--that has accrued on, and that will otherwise promote the dulling of your blades.
Post Pitting, razors are clean, sharp, and ready to hit the happy trail for round 2 of follicular forest maintenance and repair.