Not exactly the same but this reminds me of an idea I had for shareable shopping carts. You add things to a shopping cart and then you share it via a link (text, dm, chat, email, etc) and the receiver of that link clicks on it and the contents get added to their cart (alternative could be an import button that you paste the link in to make it more explicit).

Why? Plenty of times I've been ordering food with friends and we just pass around a phone to put in the order or someone dictates their order. Sometimes this can involve a friend who is not physically there and so they text you their order in just plain text. I thought it would be cool for everyone to be able to get on the same site, customize their order how they want, and share their link. That way there's no way that anyone misunderstood or forgot anything when placing the final order.

Actually I really like this idea, especially in the context of shared food ordering it makes a lot of sense!