Halloween 2016
Halloween 2016 brought back some popular Halloween-related activities from previous years as well as the pumpkin patch of Halloween 2011 and 2012. It went live on October 1st and is scheduled to end in early November.
Butchers
Butchers can be found haunting graveyards around Britannia. In addition to casting high level Necromancy spells, they also summon hordes of undead to defend themselves. When defeated, a pumpkin carving kit can be found on their corpse roughly 50% of the time.
Possible Loot:
- Jack O` Lantern Carving Kit
This can be used on Carvable Pumpkins to carve them into 1 of 9 designs for Orange Pumpkins or 1 of 2 designs for Green Gourd Carvable Pumkins
Killer Pumpkins
Once again farmers can harvest 
pumpkins this season. The larger pumpkins bear the names of Developers and Event Moderators. If one tries pick it up, it turns into a Killer Pumpkin. After defeating a Killer Pumpkin carvable pumpkins can be found in the corpse. These pumpkins can be carved using the carving kit found on Butchers. They can be Carved into 1 of 9 designs
Possible Loot:
- Carvable Green-Gord Pumpkin
- Carvable Pumpkin
- Obsidian Skull
- Crystal Skull
- Jade Skull
Trick or Treat
Trick or Treat items can be obtained by simply walking up to an Npc, saying "Trick or Treat" and then targeting them.
Beware - NPC's may opt to play a trick on players instead of giving them a treat.
If a character has Grandmaster (100.0 skill) Begging there is a small chance to receive a special treat from previous years:
Treats
Common Treats
- Jellybeans
- Nougat Swirl
- Taffy
- Wrapped Candy
- Lollipop in random flavor of Cherry, Lime or Orange
GM Beggar-only Semi-Rare Treats
These are rewarded to Grandmaster Beggars for roughly 1% of the time.
From Halloween 2009
- Creepy Cake
- Pumpkin Pizza
- Grim Warning
- Harvest Wine
- Murky Milk
- Mr. Plain's Cookies
- Skulls on Pike
From Halloween 2010
- Chair in a Ghost Costume
- Excellent Iron Maiden
- Halloween Guillotine
- Small Web (left or right, same as Halloween 2009 except hued orange or black)
From Halloween 2013
UO Dev Team Members Heads on a Pike
- Bleak’s Head On A Spike
- Brutrin’s Head On A Spike
- Gryphon’s Head On A Spike
- Kyronix’s Head On A Spike
- Mesanna’s Head On A Spike
- Misk’s Head On A Spike
- MrsTroubleMaker’s Head On A Spike
- Onifrk’s Head On A Spike
- Rakban’s Head On A Spike
- Stethun’s Head On A Spike
- Thatblok’s Head On A Spike
New this Year
- Deed for a Giant Pumpkin
- Tray of Pumpkin Spice Cider
- Tray of Candy Apples
- Gypsy Wagon Lamp
Tricks
- Temporarily changes the hue of the character's body and equipped items. Hued clothing can be used to obtain 'two-tone' or 'Halloween' cloth that comes in 144 - 156 different colors (see: Metallic Dye Tub).
- Bleeding profusely (harmless)
also, a Naughty Twin could appear which would:
- Teleport you to a random moongate on the same facet.
- Steal some of your candy.