If you print out a giant copy of an AR Card and use it in AR games, the stuff on it will appear big too! This might make games where you have to rotate around the AR card to get different views of the play area  like Archery and AR Shot easier, and you can take cool pics of you next to a life-sized Mii.

When you buy a clock for 1 play coin, select it and press A.  Get close to the clockbird when it hits the screen. Keep letting the bird hit you for 4 or 5 times and you should see a explosion. The bird should be black.When you exit it's back to normal.

If you buy the Globe in the shop for 1 Play Coin, try rapidly shooting at it. It should blow up, with a message appearing for the world's own good: "Look after our planet." Sadly, you have to spend another play coin to get it back, so use at your own risk.