If using wooden skewers, soak them in water for 30 minutes before grilling. To make lamb and turkey koftas at the same time, combine all the ingredients except the meat first, then transfer half the mixture to another bowl and add one pound of each meat to each bowl.
If you don't see ground lamb in the meat case, ask your butcher to grind some for you. Allow three to four of these tiny burgers for each adult. For kids, you can tuck one little burger into a miniature pita, and serve with ketchup.