Level Skip:
Go to the gadget screen and press X while holding R1.

How to avoid the lasers on the statue:
Unlock the lasers on the statue in the City Hall by using the Grinch's bad breath.

Spin 'n' Win mini-game
Destroy 750 gifts, then go to the upper level of Mount Crumpit to access the Spin 'n' Win mini-game.

Pankamania mini-game
Destroy 1,500 gifts, then go to the upper level of Mount Crumpit to access the Pankamania mini-game.

Copter Race Contest mini-game
Destroy 2,500 gifts, then go to the upper level of Mount Crumpit to access the Copter Race Contest mini-game.

Bike Race mini-game
Destroy 3,000 gifts and complete 100% of the game. Look behind the bookcase in the workshop with the sleigh to access the Bike Race mini-game.

Level Skip:
Go to the gadget screen and press X while holding R1.

How to avoid the lasers on the statue:
Unlock the lasers on the statue in the City Hall by using the Grinch's bad breath.

City hall:
To get into City Hall shoot the big clock and the door will open.

Mini Game Access:
Destroy the following number of presents to get the indicated mini game. Go to the upper level of Mount Crumpit to play the games.

750 presents - Spin N Win Mini Game
1,500 presents - Pankamania Mini Game
2,500 presents - Copter Race mini Game
3,000 presents - Bike Race Mini Game

The Different Gadgets:

Binoculars - whoville - 4 blueprints
Rotten egg launcher - whoville - 4 blueprints
Rocket spring - whoforest - 9 blueprints
Slime shooter - whoforest - 9 blueprints
Octopus climbing device - the dump - 9 blueprints
Marine mobile - wholake - 16 blueprints
Grinch copter - every level - 16 blueprints