I got mine from Milanoo.com when I cosplayed as Gaara.
I don't know how realistic you wanna get but these come in black, blue, or red (your choice) and have all the villages plus rogue/Akatsuki (symbol w/ slash through it). They're a decent size, meaning not kid size, and have the symbol engraved in the metal as opposed to being painted on. They run somewhere around $3 if I remember correctly.
UPCOMING CONS & COSPLAY PLANS:
Sakura Con 2018 (ideas):
Kagura - Inuyasha (50%)
Seras - Hellsing Ultimate (0%)
Gin (festival kimono) - Hotarubi no Mori e (0%)
Yoichi - Drifters (0%)
Sasuke - Naruto (100%)
PAX West 2018 (ideas):
Jace - Magic: The Gathering (20%)
Ashley - Until Dawn (80%)