Backpack of Teleportation (5e Equipment)
From D&D Wiki
Wondrous item, rare (requires attunement)
This backpack allows its user to teleport to its location. As long as the packpack is in range of 15 feet, the user can teleport to it's location. After the teleportation the backpack is back on the users back.
In combat As an action you can throw the backpack up to a range of 15 feet. You can than, as a bonus action immediately after the throw, teleport to it's location. Than, if you're within 5 feet of a living creature, you can can do an unarmed strike as part of the bonus action.