"Car" by "Poly by Google"
is licenced under CC-BY 3.0

"Book" by "Quaternius"
is licenced under CC0 1.0

"Banana" by "Poly by Google"
is licenced under CC-BY 3.0

"Lightning Gun" by "Quaternius"
is licenced under CC0 1.0

"Water gun" by "福岡のDaichi"
is licenced under CC-BY 3.0

"Pistol" by "Zsky"
is licenced under CC-BY 3.0