Mabel's Grappling Hook

 is a grappling hook Mabel Pines chose as a gift in "Tourist Trapped."

History
At some point of his life, Stan Pines used a military-grade grappling hook in a heist. Details of the heist are unknown, but he kept it afterwards. He later left it in a box in the Mystery Shack and forgot about it.

At the end of "Tourist Trapped," Stan said that the twins could choose one item from the Mystery Shack gift shop but forgot the grappling hook was there. Consequently, Mabel chose it as her gift and, despite Stan's initial protests, was allowed to keep it. In the same episode, she is later seen "shutting off the light" with it. She ends up breaking both the window and lamp in the process.

Much later, in "Gideon Rises," Mabel says she is going to defeat Gideon Gleeful and take back the Mystery Shack with the help of her grappling hook. When they plan on sneaking in and taking the Shack's deed, Mabel fires it, hits a tree branch, and hits Dipper. Dipper asks if she'll finally admit that the hook is useless and Mabel says "Nope!" Later, after Dipper defeats Gideon and his Gideon-bot falls of a bridge, she uses it to save themselves.

At the end of Mabel's Guide to Stickers, Mabel has Waddles shoot the grappling hook at her to demonstrate that puffy stickers can save your life.

Appearance
Mabel's hook looks like an ordinary grappling hook with the actual hook at the front, and the rope tied to the side. It is completely black, while the hook is silver.