Anniversary Events

Nearly ever year since coming out of Alpha, the TAKP devs have added in some custom content that is available towards the end (sometimes beginning of the next year, depends where it lands) of each year for that specific reset (2 weeks). These events are then removed and won't be available again until the following year. All of the events are available for those two weeks. If any more are added in the future, this will be updated. These are the ones we know of so far.

1st Year Anniversary Event

The Servitor of Gala's coins

Talk to the Servitor of Gala between the soulbinder and the Nexus stone in PoK, and he'll ask you to retrieve his coins. They're scattered all over Norrath -- on Phinny, in the Planes of Fear/Hate/Sky, on solb/lguk nameds, and so on (check the AllaClone list I linked). Turn in a Coin of Gala and you'll get a reward -- including, perhaps, this big ol' bag. (like a Tinkering bag)

Coin of Gala on Allaclone with NPC's it drops from.

Reference: TAKP forums