Wobblierbobblier

The Wobblierbobblier is an item found in the Wobblier Gift of Less Certainty which was only available until December 25th, 2016. The item has an interesting property which causes it to always be oriented upright unless put upside down.The Wobblierbobblier's primary function is to balance cars, so when the player's vehicle falls from a cliff, it has an increased chance of landing upright, but it does not always work. The Wobblierbobblier can also be used to flip upside-down cars, but it usually takes several attempts of hitching and unhitching. This is very useful for driving off the Volcano after obtaining Lava Wood, getting to the Rock Bridge,and to go off the cliff to reach the Shrine of the Sight.It's not recommended to hitch multiple of these, as it will reduce the effect.

Many players have also used the item for decorative purposes.

The Wobblierbobblier is based on a Roblox hat, "BiggerHead":

https://www.roblox.com/catalog/1048213/BiggerHeadThere is a glitch in which you can hitch up multiple Wobblierbobbliers and Wobblebobbles onto a car, and create a "glitched head" which has a red and yellow texture, with the different sides of the faces pointing in other directions.