Two coupon codes for your print-on-demand needs this season:
HOHOHO 20% off (good until Dec. 31st)
HUMBUG 10% off (I'm not sure when this one expires)
If there is something you've wanted from Lulu, here are great incentives to order. I found the first code on The Cimmerian, where they list several available pulp- and weird-fiction items including Dan Clore's The Unspeakable and Others, The Selected Poetry of Robert E. Howard, and Dennis McHaney's Robert E. Howard, World's Greatest Pulpster.
In the gaming realm, take a look at Fight On! Magazine, Swords & Wizardry and Knockspell Magazine, Spellcraft & Swordplay, and Labyrinth Lord or Mutant Future.