Since recent mc version, beginning with I believe 1.20.1, some of the items when hold in hand have ridiculous proportions ! And it gets bigger and bigger the more defined the texture pack is. Here are exemples using one of them, but it affects every texture pack I've seen so far.

Cobblestone stairs, no problem

Snowball, bigger than normal (32x)

Coal, bigger than normal (32x)

Snowball, even than normal (64x)

Snowball, way bigger than normal (128x)