How to return gifts from infomercial?

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My mother in law bought us an air fryer from an infomercial for $200. I'm very grateful but we just don't have the room for it. I would like to return it but don't know how. She didn't give us a receipt or anything. Any advice?

This is what it looks like. It's huge! Our kitchen is so tiny. We have no counter space or storage for it.