I semi-regularly drink vaping nicotine (aka "e-liquid") diluted in water. It is extremely cheap. I obtained 60ml of 25mg/ml strength nicotine for $10 online. It comes diluted in either vegetable glycerin or propylene glycol. A cigarette delivers around 1mg, so I usually dilute to 1-2mg in a full glass of water. To get this dose I first use a 1mg dropper to deliver 2mg of the solution to 50ml (approx. 1/2 cup) of water measured with a Pyrex glassware measuring cup. I then use the 1ml dropper to add doses of this 1mg/ml solution to a glass of water.
At 60x25=1500 cigarette-equivalent doses with no need to inhale smoke, I think "inexpensive" is an understatement. It also appears to be safe (water, nicotine, and tiny amounts of VG or PG).
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.