Radio Shack Piezo Buzzer other options?

Working on building up a couple FPVs using APM, after doing the search on buzzers, I went to Radio Shack and got the prescribed pulse buzzer that connects to channel 5 on my APM. All good, very low cost $3.25, however they are about half the size of a regulation hockey puck. HELLO bigger is better for motors, batteries but a buzzer. Sure we can use them but looking to see if there are smaller options that work with the APM.

THANKS :smiley: