Walk around an area with Bubotubers near a cauldron. Use Wingardium Leviosa on the Cauldron to lift it in the air, then move the cauldron towards the Bubotuber. A successful hit will explode the cauldron and the Bubotuber and clear the way. If the explosion is near a creature, they will take damage. The best place to try this at is Dragon Woods, near the dragon fly-by. This works best with one or more players.
Unlock the following mini-games by performing the corresponding tasks:
MINI-GAME - HOW TO UNLOCK Dugbog Bulb Raid mini-game - Collect five Tri-Wizard Shields Exploding Snap mini-game - Collect two Tri-Wizard Shields Niffler Time Challenge mini-game - Collect eight Tri-Wizard Shields Wizard pairs mini-game - Complete level 1 Defense Against The Dark Arts - You must complete the opening level. Moody's Challenges - You must finish the "Forbidden Forest" level.