Iroh's sandal (Earth-2213)

Iroh's sandal was a sandal worn by Iroh, one of the three legendary Sannin, that favored comfort and mobility over beauty and the more complex-designed sandals used by other shinobi. He frequently used the same sandal, as his foot's stench was strongly embedded into it.

History
After Iroh was captured by Jiryu and his men on Ba Sing Se, the Sannin intentionally left his sandal on the road to enable Naruto Uzumaki to track him down duo to the stench coming from it. This allowed Naruto to intervene in time and stop Jiryu from crushing Iroh's hands.

Before the reemergence of Sozin's Comet, Naruto used the sandal in a similar situation as he and the rest of Team 7 and Team 8 needed to find Iroh again. Naruto used the smell of the sandal so that June's shirshu, Nyla, could find his master. After they found Iroh, Naruto complained about Iroh's strong scent.