How do you use serde-aux?

[iddm]

As a maintainer and so far the only developer of the crate, I'd like everyone to have the best user experience as possible and so to solve as many problems as one might have with code repetition and simply any other usage of the serde crate.

I invite everyone here to share the way(s) you use the serde crate. Just right here, under this post, in this discussion.
If you have any ideas on how to improve the crate or add something new, please create a separate discussion with your proposal.