Hat of the Vanishing Act (Patreon)

Wondrous item, uncommon

While wearing this curled wizard hat, you can use an action to speak its command word to magically disappear into a special demiplane within it. You're incapacitated and can't speak while inside the hat in this way, although you can still see outside of it through the hole at the bottom, using your normal senses; a creature looking into the hat sees only a normal hat. While you're within the hat, its normally curly form becomes perfectly straight and rigid. You can remain in this special demiplane for up to 1 hour, at which point you magically reappear beneath the hat or in the nearest unoccupied space. Being incapacitated doesn't prevent you from using an action to end the effect early. Another creature can use an action to shake out the hat, ending the effect on you with a successful DC 13 Strength (Athletics) check; piercing or tearing the hat also ends the effect. Once this property of the hat has been used, it can't be used again until the next dawn.

"And now, for my next trick..."