Update:
So many of you know that i've been busy and here is what we came up with in the past few months:

http://www.mayannproject.com/

If you have ideas and suggestions feel free to post here and on the link below:

https://facepunch.com/showthread.php?t=1513155

If i see a good suggestion here ill cross post it on the facepunch thread.

Update:
I removed the suspended tag. I'll be reading from here onward. However, i will not be able to read everything. I'll let everyone know when and if you need to repost your ideas. I also started removing the ideas pending that i know i cant work on anymore. If you dont see it in the pending list, sorry i cant work on them anymore.

As always, I will contact the person if i choose his/her idea. Thanks for those who stuck on to this thread.

That is it for now.

BASIC RULES:

• Create an ITEM idea.
  
• Post your COSMETIC ideas on the comments.
  
• Post an image of your idea.
  
• Dont post Weapon, Taunts, Animations, Effects or Map ideas.

For those still reading on... We want to help the community get more involved in submitting items in the workshop. So if you think you have a good idea for an item for us to create for TF2, post them here and lets discuss them. If it's good we'll work on it. You will be creadited with at least 5% of the contributor shares and more if you work with the model itself. Posting pictures and raw renders are prefered. Please, post ideas for TF2 cosmetic items only, we cannot create maps, particle effects or weapons or stats at the moment.

Also, please do not add me in steam. Do not try and give me your idea in steam chat as well. It's not only going to take my time, it is also not safe. I cannot possibly keep track of everyone i talk to so there is very minimal possibility for me to credit you that way. If you feel that posting your idea publicly is not suitable for you or are afraid for the idea to stolen, then i'm sorry i cannot accept it privately.

Recently completed Items:

http://steamcommunity.com/sharedfiles/filedetails/?id=90095838
http://steamcommunity.com/sharedfiles/filedetails/?id=92498965
http://steamcommunity.com/sharedfiles/filedetails/?id=92497768
http://steamcommunity.com/sharedfiles/filedetails/?id=94669677
http://steamcommunity.com/sharedfiles/filedetails/?id=97308114
http://steamcommunity.com/sharedfiles/filedetails/?id=97410294
http://steamcommunity.com/sharedfiles/filedetails/?id=111327749
http://steamcommunity.com/sharedfiles/filedetails/?id=329011032
http://steamcommunity.com/sharedfiles/filedetails/?id=346164037

Rate them up if you like them. Thanks for your support.

*Working Ideas:
Blushy Heavy Face
Emet Brown Hair
Football pads
Fist Full of Bullets Remake (soldier/engineer)
Musketeer Set (Demo)
Turban (Demo/Soldier/Heavy)
Bag Pipes
Hot Mug + Hot Canister (All-Class)

*These ideas are ideas i'm actively working on. It may or may not be completed based on many circumstances. If they are removed from this list, it means they will not be worked on due to some justifiable reason. The ideas work list is also arranged in no particular order.