The Elder Scrolls: Tamriel real

This bag looks like a bag of holding but is actually a feeding orifice for an extradimensional creature. Turning it inside out closes the orifice. It devours any animal or plant matter placed inside. If a creature reaches in, there's a 50% chance it’s pulled in. A creature inside can escape with a DC 15 Strength check; another creature can pull them out with a DC 20 Strength check (risking being pulled in). Creatures starting their turn inside are devoured. It can store 1 cu. ft. of objects.