Holiday items and objects are those which are holiday themed, and coincide with a real world holiday.
Valentine's
There was a small group of Valentine themed items added with update
Enraged Koala. They aren't dependant on any holiday crafting materials, but require a special crafting station to make, the
Heart Forge. These items are currently unavailable, but exist in game files.
Christmas Season
A merchant was added to the outpost in
update 1.2.0. He's dressed in traditional Santa costume, and sells a variety of holiday themed
costumes and decorations.
Holiday 2013
Just after inital beta is when most Christmas holiday items were added to the game. They are were longer obtainable in game using normal gameplay, as the required crafting material,
Holiday Spirit, no longer dropped from monsters after update
Furious Koala, which also wiped universes. As a result the only method of obtaining these items was through the use of admin commands or inventory editors until they were re-implemented in update
Version 1.2.0.
Orignally holiday items all required a speciailzed crafting station, the Toymaker's Table.
All items were crafted at the Toymaker's Table with a seasonal material, Holiday Spirit. These were removed from monster loot pools after the holiday event in update Furious Koala..