A Handshaking Haversack is a magical item that allows a user to access a demiplane to store their items. Like its similarly named item, the Haversack simply requires a user to reach their hand in and call for the item to be summoned.
Unlike other Haversacks, however, a Handshaking Haversack has a special "Linking" property, which allows it to pair up with other Handshaking haversacks, attuning all paired sacks to the same internal demiplane. In essence, this powerful magical item allows to users across the realm to access the same inventory of items.
Handshaking Haversacks were particularly popular with merchants and franchises.
