Well, in terms of value, the most valuable item I have is Clayfighter Sculptor’s Cut which I bought directly from my local Blockbuster years ago. Other than that, I don’t really have anything super-valuable. I have a few of the rarer SNES games like Ninja Gaiden Trilogy and Dracula X.
Maybe the items that mean the most to me are my 13 Game & Watches, which I used to play all the time before I got my NES, and some were given to me by now-deceased family members around Christmastime.
In terms of unique items, I have three things signed by voice actors:
Mass Effect 3 Collector’s Edition signed by Jennifer Hale
Final Fantasy X-2 signed by Tara Strong
Bioshock Infinite print signed by Troy Baker
In the late 90’s I worked at a Software Etc, and sometimes we would receive a box of promotional items. From one of these boxes, I still have a set of unpainted Gauntlet Legends figurines meant to be used for tabletop gaming.
Oh, and I love my Killer Cuts CD. I used to listen to that thing all the time.