Just in case you want to get a jump on Halloween planning, here’s a project that’ll show you how to create a talking hat! Here’s more from joeywbell  via Instructables:

While it may be expensive and complicated to enter into the world of advanced animatronics, it doesn’t take much to fabricate a simple creation. Depending on what the outer shell is, a simple mouth can give the illusion of life to an inanimate object! Puppets are normally controlled with a person’s hand, but they could just as easily be controlled with a cheap motor. This project serves as an introduction to analyzing sounds and controlling a motor based on what sounds are playing through a talking hat! The hat used for this project is a top hat, but one could easily change what the exterior is with a bit of planning and forethought; the most difficult portion of this construction is the electronics and programming, and one of those is already done for you!

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