Well, I have 2 full closets of jerseys and stuff. So lets go just from last season to start...
Deron Williams: (2x) Autographed Ice Blue Authentics, (2x) Green Hardwood Classics Autographed, (2x) D-Will All Star Replica... One Autographed, (2x) D-Will Illinois Replica Autographed
Kyle Korver: (2x) Autographed Ice Blue Swingman Jerseys, (1x) Pair Game-Worn Converse Autographed Shoes
Mehmet Okur: (1x) Autographed Ice Blue Authentic (Less than 20 were available to the public as a mistake release), (1x) Pair Nike Game-Worn Autographed Shoes (Worn vs. Miami)
Carlos Boozer: (2x) Ice Blue Authentic Jersey, (2x) Dark Blue Authentic Jersey, (1x) White Authentic Jersey
Kyrlyo Fesenko: (1x) Dark Blue Game-Worn Authentic, Autographed (I have been told this is the only one of its kind. Fes did authenticate that this was the first jersey he ever signed, Ross Siler witnessed)
Andrei Kirilenko: (1x) White Game Worn Authentic, Autographed, (2x) Dark Blue Authentic, Andrei also promised me a pair of shoes, but his injury at the end of the season did not allow for a set of game-worn shoes, however, I was promised that I will have them first thing this season
Jeff Hornacek: (1x) White Swingman Replica, Autographed
Paul Millsap: (1x) Ice Blue Swingman Replica
Ronnie Price: (1x) Game Worn Home Warmup Jacket, Whole Team Autographed over the season
I also have a pair of Kyle Korvers game worn road warmup pants, and a pair of Deron Williams home warmup pants.
The other important piece from this last season is my Luxury Suite Ticket from the Cleveland Game, signed by Sundiata Gaines. Normally I sit lower bowl, that game was my first time ever in a suite.
I also have probably 35-40 T-Shirts from last season. There are literally boxes and boxes of stuff in my spare bedroom with every halftime print out, every game ticket, every give-away item, etc.
However... My MOST TREASURED POSSESSION of all is my set of autographed photos written to me directly from Karl Malone and John Stockton, as well as my pair of Game-Worn wristbands that Karl Malone gave me, and my ticket from that particular game (all these were on my 13th Birthday), which I sat 5th row behind the visitors bench. Karl walked over after the game and gave me the wristbands directly before departing the floor. When the shadowbox that contains and displays these items was appraised for insurance, they were valued at $25k, but noted as irreplaceable.