There are quite a few starcraft merchandise spinoffs out there and it can get confusing. There are some hubs on starcraft merchandise however to break them down into different categories.
Gaming focus: If you play starcraft 2 intensively or plan to get a gift or starcraft present for someone who does the bread and butter of the game would be in either an ergonomic starcraft 2 gaming mouse or a starcraft 2 razer gaming keyboard. Both of these are pricey but would make a good addition to any sc2 gamer’s arsenal!
There are also the more random stuff like gaming headsets.
And of course this would include the game if you’ve not purchased it yet! If you’re looking to get a friend into the game, amazon is selling it at a pretty cheap price these days. Far far from the initially rather steep price. Even the collectible edition has come down in price for some places, although it would have appreciated in others.
You could also try to obtain a pre-order copy of Heart of the Swarm for a friend, if you know they would like it and aren’t buying a collector’s edition if there is one.
Non Gaming Focus: There are also many other forms of collectibles to do with starcraft 2! These can be T-shirts which are pretty run of the mill spin offs, to things like mousepads which I guess could come under the gaming focus. If you’re not really into starcraft 2 t shirts then there are things like starcraft 2 books for those interested in the backstory.
If you’re looking for a christmas guide you can check this starcraft 2 christmas gifts guide out, maybe it’ll help in preparing presents for your friends!
Unbuyable Stuff: While not really beyond the reach of money, some of these things require a more personal touch. This usually involves things like soft toys or plushies of starcraft units like a probe or home made stuff like cakes shaped in a starting base. These kind of stuff usually won’t be available to you unless you know someone who can make them!
Then again, you could learn to do it yourself. Or check if the makers are willing to custom make and design one for you, at a price…