This is an extension of a comment I made that I can't find and also a request for examples. It seems plausible that, when giving advice, many people optimize for deepness or punchiness of the advice rather than for actual practical value. There may be good reasons to do this - e.g. advice that sounds deep or punchy might be more likely to be listened to - but as a corollary, there could be valuable advice that people generally don't give because it doesn't sound deep or punchy. Let's call this boring advice.
An example that's been discussed on LW several times is "make checklists." Checklists are great. We should totally make checklists. But "make checklists" is not a deep or punchy thing to say. Other examples include "google things" and "exercise."
I would like people to use this thread to post other examples of boring advice. If you can, provide evidence and/or a plausible argument that your boring advice actually is useful, but I would prefer that you err on the side of boring but not necessarily useful in the name of more thoroughly searching a plausibly under-searched part of advicespace.
Upvotes on advice posted in this thread should be based on your estimate of the usefulness of the advice; in particular, please do not vote up advice just because it sounds deep or punchy.
Find what is best for you, and buy a lot of them. Then you can ignore this topic for a long time.
If you buy more identical pairs of socks, if some of them get destroyed, you can make pairs of the remaining ones. On the other hand, if you buy similar pairs, you will waste a lot of time sorting them.
...and a pillow (or two). Try different sizes and shapes.
For example a cutting board should be large and easy to wash. An increased size can make cutting much easier.
Depending on where you're using it. When my roommates leave the kitchen to cluttered to use, a small cutting board that fits on the desk in my bedroom is really nice to have. (Use case is usually eating cheese or carrots while doing homework - it doubles as a plate. I wouldn't want to chop meat that way.)