Sand Gourd

Gaara carries around this giant calabash-shaped gourd covered in designs and filled with his chakra-infused sand which he can freely manipulate. Infused with his own chakra, Gaara controls this far easier than that of natural, though he can use this supply to break down the ground to increase the quantity of sand. The gourd and cork are also made from sand and can be broken down and used to perform techniques as well. Kiba Inuzuka noted that the sand from the gourd has a strong stench of blood, due to the number of people Gaara has killed with it.

Trivia

 * According to old folklore, tanuki are thought to have been well "endowed" and would sling their testicles over their shoulders. The way Gaara, the third jinchūriki of the tanuki tailed beast Shukaku, wears his sand gourd highly resembles this.