From the school of "Rum with anything sweet" comes this very reliable and yummy drink. If it keeps the wife happy, then it goes on my list of favorites... and this one definitely qualifies. I put this together in a pinch while on vacation in the cape.
1 cup simple
1cup white rum
a fistful of berries
a handful of mint
muddle the mint, lime (sliced thinly) and berries. add rum, simple, and soda to taste. serve over ice... frequently.