In this category, even marginally improving the efficiency of things we do frequently can have significant returns on time.
A few of these fall into “home design” or “home maintenance”.
I’ll concede here of course that it’s not clear that it’s a good idea to make these things more efficient, as there are surely positive effects from some degree of “inefficiency”.
This is where ideas like Spaced Repetition and Incremental Reading could have an impact.
There are likely more Tools for learning that could help us absorb information better.