1. Poison Needle: Shizune, Tsunade's disciple, wields a forearm device capable of shooting poisonous needles.
2. Water Needles: Tobirama Senju, the Second Hokage, masters forbidden jutsu and Water Style ninjutsu. He can create water needles by spitting saliva - fast and powerful weapons.
3. Nail: Nagato, also known as Pain, attempted to strike Kakashi with a nail during the attack on Konoha. Kakashi used Kamui to teleport the nail away, avoiding a fatal blow.
4. Thunder Pen: Killer Bee, the Eight-Tails Jinchuriki, can infuse lightning chakra into objects like pens, increasing their piercing and destructive power.
5. Kusanagi Sword: Orochimaru surprises Tsunade by storing the sword in his mouth for a hidden weapon, causing a severe injury.