Mr Boom's Firework Factory - Powerup Lucky Dip

When the player has enough stars from completing levels, they can go to the stock room, where they must select a random box to open. That box may contain nothing, or a booby prize, or a power up. They can then use the power ups in levels to complete them. Booby prizes stay in the inventory forever and stack, e.g. old boots, a burned cereal box, etc. These are useless and for cosmetic only.