The following came from Sengoku Jidai!!

• Squish, stomp, split, smash, and bop him until there's nothing left to squish, stomp, etc.
• Throw him into the spring of drowned mouse and feed him to shampoo.
• Tell Inu-yasha that he has a shard imbedded deep inside his body.
• Put him in a strait jacket, lock him in a small room and make him watch reruns of pokemon
• Rip his head off and use it as a bowling ball.
• Stick him in the microwave and fry him until he blows up.
• Steal the stupid two-headed staff thingie, raise it above your head, scream bloody murder and chase him down the road, scaring him sh**less.
• Light him on fire and watch him run around screaming.
• Sic Rin on him.
• Tell Sesshou-maru that Jaken called him "fluffy"
• Tell Inu-yasha that Jaken dissed his mom.
• Throw him in the middle of a fight between Inu-yasha, Sango, and Miroku vs. Naraku.
• Give Shippou cappuccino and lock him in a room with Jaken.
• Make him baby-sit Rin
• Ambush him in a dark alley, bop him over the head and while he's unconscious put a sailor scout uniform on him and mail him back to Sess.
• Steal the staff of heads and tell Sess that Jaken lost it again.
• Put handcuffs on him and lock him in a Tupperware container.
• Replace Tenseiga with a real sword and tell Sesshoumaru that Jaken needs another demonstration