Materials for The Electric House

At least six Christmas tree light bulbs
Three nine volt batteries.
Three switches. (or some combination)
Small electric motor
Two average size rolls of insulated wire (it is helpful to have one red and one black roll).  Suggestion: if you are using a strand of Christmas tree lights (the small ones), there is enough extra wire!  It works perfectly.
Doorbell or buzzer.  Suggestion: use a Piezo buzzer available at electronics stores.  They cost approximately $3.00.
Foam-core paper sided project board. Suggestion: Recycle your science fair triptych.
Xacto knife or single-edge razor blade.