I often use that time to spec out a future task. Either by going through Github issues, doing some research and adding details, or by spinning up another codex/claude session to create a detailed design document for a future task and iterating on that. So one agent is coding while another is helping me to spec out future work. So when the coding agent is done I can immediately start on the next task with a proper spec, reducing margin for error.

I'm always prompting. I let Gemini calendar my time (Google Calendar, of course) so that there are zero gaps where unwanted human thought could sneak in. I use an agent manager called Pelican to check in with all of my agents every second and have them tell me what I should be working on next using meta-agents, which are agents running tools in a loop to run tools in a loop. It's super effective!

I cut and paste the chats into other GPTs to see what they have to say.

Use Black Screen app (https://blackscreen1.com/) to stare at the backness of all your monitors. Or look at some random photos with it. :-)