Trophy Hunting is a blast!!! I also got to help Hunt down some Trophies for our State Shoot. There are as many different things to get for Trophies as there are Shooters. I talked to the shooters and got some real unique ides from them and then went on a search.
Most newer shooters want leather, more experienced shooters don't because they already have enough. Knives, Guns, Money seem to be the most mentioned in My queries.
I was only in the market for one days worth of trophies (49) With that being said, check a few places because it will be difficult to get 450 trophies from one supplier if You want to have enough different items to satisfy everyone.
I can recomend Milt at Leach Laser in Phoenix he went out of his way to show Me different things that would be worth Winning at a State Shoot They have alot of options to choose from and does VERY nice Custom Engraving and Design at a reasonable cost with Excellent Customer Service. Milt is a Trap Shooter and an A.T.A. and A.S.T.A. Member, I felt it important to support Fellow Shooters, and Made in America products while working on these types of projects. I can send You his contact info if You are interested.
Mark