Grinch the

Extra presents:
Use the egg launcher to shoot the kids to make them drop
their presents.

Hidden present:
Look on top of the town's Christmas tree to find a
hidden present.

Entering Town Hall:
Use the egg launcher to shoot the clock to get inside
Town Hall.

Finding the blueprints:
Go to the bottom level of Town Hall and find the three rugs
on the wall that appear differently than the others.
Pull out the rugs to find the blueprints.