how can I make new itens?

Crush wrote:Seems like you got an error in your server config that defines the pirate hat as an useable item and not an equipable item.

yeah, and this itens to.
-Santa beard hat
-V-neck Sweater
-Axe hat
-Antler hat
-Jeans shorts
-Eyepatch
-Bandana
-Christmas tree hat
-Ranger hat
And Others

for example I try to equip pirate hat, but only have the option use and when I click in it the item disappear

what´s the command to make itens? and why I can´t equip itens, only use?