Here are few things you could share and or discuss.

What kind of logs do you spit out (INFO , ERROR only)?

Are all your logs worth consuming and if so, why?

What are some success stories you have about logging?

Example: An app was spitting out 5gb of worthless logs, you code it in a way that it only produced what is really important.

What are some cool things you can do with logs you get from xyz resource?

Example: Your logs are some metrics, and you created an outlier where if threshold hits 10% than from previous hour?