This group, man. It's not even the full group of us yet, and I already love it!
Vampiricangel - Thranduil
Ben - Fíli
TealPirate - Thorin
AxelKanon - Bilbo
Groovy-guy - Gandalf
Faruku-costumes - Gloín
Myself - Kíli
Roguearcanis - Tauriel
The amount of work that went into these costumes was so insane that I'm likely to forget a load of stuff, but I'll give it a go...
Gandalf and the fabric parts for Thranduil were made by Groovy-Guy
All of Thorin as well as soft costume and wig for Fíli were made by Tealpirate
Weapons for Fíli as well as Kíli's sword were made by Ben.
Bilbos costume was assembled by AxelKanon (aside from the buttons, which were sculpted and cast by Faruku)
Gloín's entire costume, weapons, and Kíli's hairclip were all made by Faruku.
Kíli costume, wig and weapons made by myself.
Tauriel costume and wig made by Roguearcanis.
The dwarf costumes were made with mutual help between myself, Faruku (who taught me how to do silicone/resin casts! 8D) and TealPirate. Groovy-Guy was still working on Thranduil and Gandalf on the day of the convention!
With these guys, we won second place in the Sci-Fi Weekender costume contest