Twig Flute of Companionship

A small branching twig that has a flute carved into its base. A few green leaves are attached to the branches. The wood is a light brown and sturdy, appearing to be Suthwood. A singular dark blue grape hangs on one of the thicker branches. It can be picked and eaten, tasting sweet, however, it does not still any hunger. The fruit regrows after being eaten or otherwise discarded.
When feeding the grape to a friendly and willing beast or beast-like creature, the holder of the flute will form a special bond with the creature, being able to summon it by playing the flute. The creature must be in the same plane as the holder of the flute for the summoning to work or possess the means to travel to the owner’s plane. As a bonus action, the flute can be played, causing the bonded creature to manifest at the start of the flute user’s next turn. The creature counts as a companion and remains at the user’s side for 1 hour or until dismissed, being transported to its previous location. Dismissing the creature takes one bonus action. If the creature starts in a different plane than the flute’s user and is able to reach the user’s plane, it will appear after 1d4 turns.
If the flute user or the creature dies, the bond is broken and the grape will regrow. The flute user or the creature may choose at any point to break the bond. Additionally, if a different creature attunes to the flute, any bonds made using the flute by the previous owner will be broken.