In-Game Description-Try throwing this barrel in a hoop!
XP Gain: 1,500 per barrel
Cost: 1000 coins for 3 or 5 for 12 gems
Level Unlocked: 32
Other than acquiring it mid-game, the bamboo barrel is also spawns off-screen after tickling the ninja for too long if there is no other prop nearby, then the ninja runs and hides behind it. The prop despawns when the ninja stops hiding.
However, by doing some specific actions, the game may fail to despawn the prop, allowing the ninja to train with it and collect considerable amounts of XP early-game.