There's been an update to BrandonSanderson.com's store for the holidays with a few new items. There are signed Oathbringer hardcovers (personalizations will start again in January), a Doomslug shirt (which is absolutely adorable), and some new lanyards. The two new lanyards are a cosmere one and a Skyward one, and you can get both of the new ones for $12. There's also a Glowing Kaladin t-shirt.
There are various items coming soon that are not quite available for purchase yet. One of these is the Hero of Ages anniversary leatherbound, which will have the Hemalurgy table in it. (Hype!) There will also be a Cobalt Guard patch and a DDF patch coming as well.