Brillant- check out ValleySchwag . For $15 bucks a month these folks will send you monthly packages of the t-shirts, ballcaps, notepads, stickers, keychains, and other booty blaring the slogans of Silicon Valley startups.
Just a couple weeks ago i went to the Haight Street GoodWill and thought it was soooo cool that a lot of wares for sale where from the 'old' startup days. tshirts, notepads, martini mixers, etc. Now you can get your own 'new' stuff to collect. I went over to eBay to see indeed what kind of tradeshow and launch items collectors might be looking for. Here is a 1996 orginal Microsoft Network launch poster. Priced at $99 bucks. Hey that's almost 7months of valley schwag ;-)