Youtube primarily. For Threshold or below I can basically watch anything. For anything harder I watch POV race videos like Norcal Cycling, Will Hardin, etc. Sometimes with the sound off so the commentary isn’t distracting while I’m breathing out my ears.
This time of year though I’ll also watch world tour racing, MTB racing, etc.
Drive to Survive on Netflix is also an interesting and exciting enough series to stay interested.
I also watch MotoGP in the off season which kills a bunch of time. PRO TIP: on black friday they sell an off season pass for like $5 so I do that and watch the previous season from Dec to the first race in March. Much better deal than the $150 or whatever the normal pass costs.
I recently moved back into my parent’s house for a stint and my brother’s and I’s old video game systems are here so for recovery or Z2 I’ve been playing video games while riding. Pull the trainer table up close and use it like makeshift aerobars while in ERG mode. That’s been crazy at just making the time disappear.