Will a watch battery work in a disposable camera?

Would it be possible to substitute a thin watch battery for a AA battery in a disposable camera because we found that the camera does not need the whole AA battery. Also, would it be possible to charge the flash by winding the same part used to advance the film? This is for a school project and if you have any other ideas on how to improve a disposable camera, it would really help. Thanks.Will a watch battery work in a disposable camera?A watch battery would be quickly exhausted by being used in a camera, particularly if you used the flash. The AA battery is a quicker and cheaper solution. In most cameras the flash has a switch of its own, and is not activated by the winder.