I don't know if I have anything I'd describe that way, but on the rare occasion I feel like turning my brain off and re-watching a show I know I like I'll usually just pick some random thing that I rated 8-10 on my Anilist account.

I suppose a few likely candidates are:

• Kaguya-sama: Love is War
• Fullmetal Alchemist Brotherhood
• Gundam Build Fighters (season 1 only)
• Log Horizon (if I'm feeling nostalgic)

Really depends on the mood I'm in though. In the past I might've put Legend of the Galactic Heroes on that list but it's felt a little too real these past couple years for some reason.