Get the novelty items from
and make sure you already got
Then flush the chattering teeth, exploding cigar and lighter gun to Hoagie.
Offer George Washington a cigar and after the cut-scene give him the chattering teeth.
After the fire has been built, take the blanket in front of Hancock and go upstairs and out the window to the roof.
Cover the chimney with the blanket and go downstairs. Do NOT go into the Founding Father's room yet. Instead go outside and talk to the founding fathers.