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Toy Gun speakers, or premade circuit with sounds effects for charging

I am making retro-50's laser gun and want it to make a charging sound when I "turn it on", before I fire it and maybe even have it make a retro sounding laser shooting sound. 

However, I have been unable to locate pre recorded speakers and circuits. I have looked at toy guns, becuase the size would be about right. I need it to be smaller and fit inside a smaller cavity.


Does anyone here know of a place to buy such an item?  Do they even exist? Or is their a way to record sounds and then have them playback using a simple triger method.


Thanks,

Bonnonon