Spied this today: Quench Products' "bar10der." 10 tools in one Swiss-Army-style tool. Knife, zester, two strainers, muddler, jucicer, corkscrew, reamer, jiggers, stirer, and bottle opener. So cool!
Looks like you can get it at a number of retailers. I found it at a trusted overland-centric store called "Crate & Barrel." Here's another link to an "outfitter" that sells them: