Door Ninja

The Door Ninja is an animated heavy steel door with a silent portal disk attached to it (maybe with the Stick spell)

Hit Points:
Init:
Speed: 30 ft. (6 squares)
Armor Class: (+ size, + Dex, + natural), touch , flat-footed
Base Attack/Grapple:
Attack:
Full Attack:
Space/Reach: 5 ft./5 ft.
Special Attacks:
Special Qualities:
Saves: Fort +, Ref +, Will +
Feats:

Girallons are savage, magical cousins of the gorilla. When moving on the ground, a girallon walks on its legs and lower arms. An adult girallon is about 8 feet tall, broad-chested, and covered in thick, pure white fur. It weighs about 800 pounds.

Rend (Ex): A girallon that hits with two or more claw attacks latches onto the opponent’s body and tears the flesh. This attack automatically deals an extra 2d4+9 points of damage.

Climb: A girallon has a +8 racial bonus on Climb checks and can always choose to take 10 on a Climb check, even if rushed or threatened.

Large Magical Beast [extraplanar]
Environment:
Organization:
Abilities: Str , Dex , Con , Int , Wis , Cha
Skills:
Alignment:

Treasure:

The Caper

A team of criminals get together to do something, most likely carry out some kind of crime. They are usually distinct, interesting characters each, and may be polar opposites of the good characters.

Possible uses: the players play this team of criminals fully, then later "discover" the crime(s) as their real characters. It provides a nice change of pace when roleplaying, as the players can play different personalities with different motivations and goals than their regular characters.

Has potential to flesh out and individualize NPCs/villains more dramatically than the DM doing so, as each player may lend their own unique touches to the villain they play. Also potentially drawback, as a character meant to be serious might end up being portrayed as a buffoon...

Bachelor Auction

There is an auction in a kingdom of eligible bachelors (or whatever), and somehow one (or all) of the male characters end up involved. Some possible outcomes is that they tell a fellow party member to bid on them so they don't end up the "property" of some horrible person, in which case the horrible person is rich and outbids them anyways.

Other possible bidders could include extremely beautiful people (Nymphs, Sun Elves, Dryads) or extremely ugly people (Hag, Troll, Mongrelman). If the party is good, could make for great swallowed-dignity scenes, if the cause is good, or if the party really needs the money.

Or for an actual gaming twist, maybe a villain buys them. It could be serious and lead to an encounter, or it could be funny (if female) and she just wants a night out with someone who understands her. Obviously in the latter case it needs to be a pest villain and not an evil villain.