To activate the projector in the Puppet Shop, you need the Mechanical Wing , the Parrot Head , and the Doll Part .
In Chapter 6 (First Tower), you must retrieve a Clay Tablet to solve a color-matching puzzle on the door. File: Puppet.Show.Souls.of.the.Innocent.CE.zip ...
In Chapter 1 (Girl's Bedroom), you must find a mechanical doll part on a headless doll on the bed. To activate the projector in the Puppet Shop,