Well, due to extreme boredom, I have come up with a few element ideas that are (hopefully) original enough. If anyone wants one, I would be delighted if you would use one of mine. I have no guarantee that each element will pass through, but perhaps even if you do not get through with my element it will inspire some novel ideas of your own.

Also, should anyone need some advice or otherwise a second opinion on their ideas for their own original element, I would be happy to oblige. I do hope that this may help any hopefuls in their difficult quest to enter this prestigious Organization.

Since no one seems to be in need of my services, I suppose I'll just randomly throw out elements that I was thinking about sometimes and perhaps someone will see something that they like and that works.

Element of the week (well, not really week, more like undefined time period):
Element of Conformity (Can be also defined as the Element of Averaging)
Summary:
Compares 2 or more statistics, features, levels, objects, etc. and averages them so that they are all at the same quality or level.
Ex.1- You're up against someone ridiculously strong, while you are fairly weak. You use the element to average your two strengths so that you are both now semi-strong.
Ex.2- You have a group of 7 Nobodies and the enemy has a group of 13 Keybladers. Using your ability, you average the number of objects (which is in this case, people) so that each side has 10. The 3 Keybladers would either be sent away from the immediate battle vicinity, or merely unable to participate. The 3 Nobodies would be summoned from the immediate area or be represented by Lesser Nobodies.
Ex. 3- You average the faces/hairstyles/heights/voice/etc. of you and your enemy so that you both look identical to each other (different from the original look/state, but now both identical to each other), so that it confuses the enemy's teammates.
Ex. 4- You take an item that's really expensive and an item that's really cheap and average their price so that the item that was really expensive is now more affordable.
Possible Limitations:
1) You can only average a certain number of times within a certain time period (Once per 5 min or something).
2) You can only average up to a certain amount of objects/people/stats/etc.
3) You can only apply your ability after fulfilling certain conditions - ex. touching the thing you are going to apply your ability to, etc.
4) Your ability wears off slowly, so that the object eventually "un-conforms" and returns to its original state.
Possible weapons to consider:
A graphing tool, a bar (like a long stick, reminiscent of a fraction line), a set of scales, etc.
Name considerations:
Jack-of-all-trades, Master of none, Divisor, the Common Factor, the Common man, etc.
Interesting Twists:
Making your nobody really different or really unusual, un-conformist, or uncommon for a bit of contrast. Making your Nobody being obssessed with either individuality or conformity (or perhaps Communism?). Having your Nobody once attempt to average a Heart between themself and a regular person, and now longs for even the sensation of the half-heart it got at that moment.

can i use this just to try to form a weapon and character to it?

Certainly. I would be glad to help.

thank you soooo much!

What about locks?

So like have a giant lock on a chain as a weapon.
Summary: The nobody can lock up a person for a limited amount of time.
Ex: If they're in a battle, they can lock up their enemy. It can only last for a couple of seconds (let's say, 45) before the lock breaks. Or the enemy can get out by using their weapon (if they have one)
Limitations: Can only do it for a few seconds
The locks are breakable
Name: I dunno, something to do with locks?
would this be too much like incarceration? i think it would be, but.... just checking....

Actually... sorry but the element of Locks is taken. I don't think it's up on the member list yet, but it's definately been accepted already. Look at the link: [link]

The funny thing is their idea is almost the exact same as yours, down to the element usage and weapon choice. Great minds think alike I suppose.

oh.
Great minds? yeah, i suppose so.
That sucks that it's already taken though....

Yeah, I'm really sorry... it does suck that it's taken. I guess you'll just have to try again.

Another element:
Element of Objectification (or Element of Representation)
Summary:
The ability to turn immaterial/non-tangible things or ideas or concepts into actual objects. Simply, the ability to convert abstract thoughts/feelings into real life objects.

Ex.1 The Beast's rose (from Beauty and the Beast) represents the Beast's humanity and the associated capacity for love. You could create something akin to that.
Ex.2 See Ex.1. Once that is done, you could destroy that aspect of them by either stealing it or just outright destroying it.
Ex.3 Turn Pain into an object (such as barbed wire) and use it against the person (the object causes the person pain -> makes the object grow -> causes more pain -> etc.). Or turn Pain into an object and then destroy that object so they feel no more pain (they'd still have wounds/scars/trauma but they wouldn't feel the pain anymore).
Ex.4 Turn their Will into something switchable (like a large lever) and affect the object (such as by pulling the lever to the other side) to affect the level/direction of their Will (causes their will to be very weak or causes them to focus their will on something else then what they were originally)

Possible limitations:
1) Can only do one of this at a time and the element's effect only lasts a short time
2) You and the target cannot directly effect the created object
3) Element is unusable unless you use your weapon
4) The larger role the aspect plays in the target's life/personality the harder it is and the more energy it uses to objectify it.
5) Having the created object be directly relatable to the target's aspect (ex. making someone's Will in the form of a stuffed ferret doesn't make much sense and is not "representational" of that aspect) <-- should probably have this limit regardless of whatever other limit you choose

Possible weapons to consider:
A folder, some sort of organizing tool, a book of metaphors/similes, a screen saying "_____'s ____ is like a(n) _____", etc.

Name Considerations:
Materializer, Shallow Envisionary, Metaphorical master, Random Representative, etc.

Interesting Twists:
Having your Nobody also be a philosopher (uses this ability to try to solve philosophical questions) or a poet (uses his element as part of his poetry [metaphors, similes, metonomies, etc.]). Perhaps having the Nobody once try to Objectify his Nobody-ness into an object and having it either failing or almost killing him when they tried to destroy it.