I have only purchased the Library Edition volumes containing the canon comics and the novels, for myself. I bought the Tali skater dress for my girlfriend, and she's bought the Garrus Heavy Armor hoodie for me. Oh, I also have the Art of Mass Effect book. I like the extended universe stuff, and I'm a wee bit too poor to splurge on the awesome deposits.
N7 hoodie :P No joke most of the time i wear it casually like i normal hoodie even though it is classed as a cosplay item, another thing i have which isnt a game is a Cerberus Key-chain but that isnt as exciting as the hoodie