From http://www.glitch-strategy.com/wiki/Gum_Tree : The Gum Tree has never been seen in-game. Stewart Butterfield wrote in January 2011, "The gum tree (and spigot) were scratched over a year ago. But, hey … maybe they make an appearance one day :)"
The announcement about the "un-launch indicated they were adding more aspects to the game. If you look through the "items" area of the Encyclopedia, you will find a lot of different items, such as a still and other interesting things....