Jake's sword

Jake's sword first appears in "Tree Trunks"; Jake was leaning on it when Tree Trunks called them in for pie.

It was seen again in "Conquest of Cuteness." One of the Cuties was seen carrying it and then dropped it when the lights were turned on.

The sword has an unusual appearance, the hilt being longer than the actual blade. It has a skull for a pommel, as well as a eye on the guard. Half of the blade is serrated on one edge. Jake most likely is not proficient with this sword, as he is seldom shown using it. Additionally, Finn easily dispatched him in a sword fight aboard the Mystery Train.

Trivia

 * It appears to be a miniature, non-living sword version of Billy's gauntlet Finn wore in the season two finale, since the sword has an eye on it, similar to the one on Billy's gauntlet.
 * Because of the length of the hilt, the weapon resembles the Japanese nagamaki more than a traditional sword.
 * In "Mystery Train," when Jake was disguised as The Conductor, he used a wooden sword.
 * The handle is longer than the blade.
 * A toy version of Jake's Sword may be made in the future, similar to Finn's Golden Sword of Battle.