Is stock in a managed vanguard index fund cheating 😅? I guess that’s assuming vanguard will last to manage it and that there’s no socialist style economic reform that makes owning companies less valuable.
Government bonds maybe?
Your comment looks surprisingly fit for https://www.lesswrong.com/posts/SfbesWBQQY3RJkJKa/what-would-you-store-to-maximize-value-in-100-years-a, which makes me think your intention may have been to submit it on the other post.
Huh, you are correct that was indeed my intention 😄 no idea how I managed that.