I finally got around to getting a character posted.  I have been a bit busy recently but here is something for your amusement.

System: DnD 4.0
Class: Rogue
Level Requirement: 4
Books Required: Players Handbook (PH), Martial Power (MP), Adventurer’s Vault (AV)
Build Requirements:  Ruthless Ruffian Class Feature (MP), Belt of the Brawler (AV 164)

Ruthless Ruffian grants Rogues training in Clubs and Maces, they can be used for Sneak Attack and any Rogue Ability as if it were a Light Blade.  The Belt of the Brawler treats any improvised weapon (including unnamed attacks) as a Club for attacks.  So with these two simple things combined, you can walk around with a rubber chicken (improvised weapon) and sneak attack them with it.  I used something more innocent but there are a lot worse improvised weapons you can hit people with.  Not to mention you can have it be magical which can make it even more amusing.  Flaming Rubber Chicken Sneak Attack!

Fisticuffs is my version of this character where you use the Unarmed Attack aspect of this.  I was allowed by the DM to put a magic weapon ability on a glove for the purposes of attacks, this would take up my Hand slot item.  Though if you wanted to have fun, you could get a boot or even a head guard (for head-butts) instead as Unarmed Attacks can be any attack from your body.  Magic items are there to work with abilities to keep the target Rattled (-2 to attack), giving me Combat Advantage and counter attacks.