If you could make only one item purchasable with crypto, what would it be?

If you could make one item purchasable with crypto, what would it be?

Imagine something like the country El Salvador does, but instead of everything being purchasable with crypto it is just one thing of your choice.

It can be anything, whether it is just a cheap gum, or an expensive super sports car, etc...

Keep in mind that the thing you chose would be available for everyone to purchase it with crypto and not exclusively to you.

So yeah this is just a question that came up in my mind and I am curious to hear your answers/opinions on this.