This is a discussion topic for the Ore project, ItemDisplay-Expansion. View the full project on Ore for downloads and more information.
ItemDisplay Expansion
Show the item you have in your hand in chat
This expansion only supports chat messages. If used anywhere else, it will not display the item.
<item_display_main_hand:(name)>
Displays the item that the player has in the main hand in chat.
<item_display_off_hand:(name)>
Displays the item that the player has in the off hand in chat.
The name argument is optional, here you can put a string which will be used to place the item in the chat.
By default, “item” will be used.