What am I being paid for? (postdoc)
Research is a very non-linear process, where long stretches of work may produce not much of value (even though you have learned a lot!).
If you're planning on leaving academia this presents a problem, because you might not actually produce anything before you leave, and it's understandably difficult to motivate yourself to work on something you plan on dropping midway through.
Therefore, I would advise you to focus on projects that are likely to pay off before you leave. Of course without specifics it's hard to come up with examples, but I'll take a crack anyway.


Find a colleague who can benefit from your expertise and help them out.
Reach out and see if you can give some talks about the research you've already completed.
Volunteer and take over some teaching from a colleague.
Expand your (digital) office hours.


Lastly, you've probably spent a good amount of free time doing research anyway, so I wouldn't feel too bad about taking the occasional workday off to do something other than work. (Perhaps figure out what you're going to be doing next.)