DR Elmore's post about the Sparkling Ice reminded me I was really thirsty, so I went to the fridge and took out the last cold one, a Black Cherry. One sip, and I suddenly associated that intense lively flavor with the cherry component of the Dolores Restaurant's cherry lime rickey. Then I remembered I also had fresh lime slices in the fridge (I usually keep some in a plastic container for squeezing into seltzer or Cokes or whatever), so why not...?
I squeezed a couple of lime slices into a glass, filled it with Black Cherry, added crushed ice, and... voila! - my best imitation yet of that rickey. I know there are a number of recipes on the web, but I haven't tried them yet. But this spur of the moment thing worked really well. I'll have to stock up on these and see about perfecting the proportions.