QB-Core

1. Add the items inside qb-items.lua and place them inside qb-core/shared/items.lua

2. (Optional) Find 'weapon_snowballs' and replace it with

   weapon_snowball              = { name = 'weapon_snowball', label = 'Snowball', weight = 1000, type = 'weapon', ammotype = nil, image = 'weapon_snowball.png', unique = false, useable = false, description = 'A ball of packed snow, especially one made for throwing at other people for fun' },

This will set the snowballs to stack

Done!

Save changes and restart server