If you like fish, it can work really well as a kebab.
Cut a meaty fish, such as tuna into chunks and thread onto kebab sticks with pepper, onion and mushrooms. Squeeze a bit of lemon or lime over - lovely.
Also for BBQ food I like to marinade meat such as pork chops with either Reggae Reggae Sauce or Jack Daniels BBQ sauce.
When you having a BBQ? Hope the weather stays nice for you