Multi Tool - Allen and Socket Wrench - 3-Way - Motion Pro

Grab one of these Motion Pro 3-way allen wrench 1/4 inch socket combo kits and hide it away on your bike.

It combines six tools into one: an 8 mm, a 10 mm and a 12 mm hex socket, with a 4 mm, a 5 mm and an 8 mm hex drive. And while it's not exactly the love triangle you're after, if you're in a bind it could save your ass.