Piko Piko Hammer

The Piko Piko Hammer is a weapon wielded by Amy Rose that she keeps in her personal hammerspace when not in use. The number of hammers she can produce are unlimited, and when swung causes a flurry of hearts to trail it. On top of swinging it as a weapon, Amy can slam it into the ground and use the resulting thrust and momentum to catapult her higher into the air than she could jump under her own strength.