legendary puppet events: 10 white puppets of chika, the 3rd kaekage, hiruko, sasori's puppet body, the mother and father puppets, and kankuro's arsenal.
stone of gellel event taking in place in now abandoned suna
2nd Hokage's sword
Totsuka Sword and the Yata Mirror
white light chakra sabre of Kakashi's family
Hidan's scythe, and perhaps something dealing with jashinism.
Tayuya's flute
Temari's fan
Zaku's air vents
The weapons from the gaara filler: garian sword, fire sword, infinite Armor, and Weaknessless Soaring Shortswords
Kurama clan genjustu
Asuma's blades
Madera's war fan
Hero's water
Human animal body modifications such as hanzo's poison salamander sack in his body
meh will probs think of more l8er