Hi, have you tried boat trips around Kalkan and the kekova one? Fab days out.
Hire a car and explore the mountain villages? I have heard that the Kaya mountain BBQ is fab but never personally tried it.
Presume you've done Kaputas beach too. Day trip to Kas and try the beach clubs there?
Beach clubs around Kalkan?
Day trip to Fethiye/Calis?
You've probably done all these things but I can't think of anything else at present. I'm sure someone will come along with more/better suggestions.