First of all, I'd love to hear what hacks you've actually used. A lot of them seemed interesting, but I'll probably forget them when I actually need them. Hearing about specific ones will help.
Secondly, friendly recommendation - you should check out Reddit. You're a serious HNer, so I assume you care at least a little about the goings-on online, and Reddit is a big part of the internet now. See it, if only to be able to say that you saw it.
I barely visit Reddit myself, but there are a few things it's good for - for example, information about specific topics tends to be found in subreddits about that topic. E.g., I started playing piano recently, and to get interesting info on it, searched "piano reddit" in google. Not only are there generally good discussions there, some popular reddits like this one have an FAQ which lists links to lots of previous discussions you might be interested in.
Specifically, today I used the cut down milk carton to make a small "dustpan" for picking up beads, screws, and other small items, and then I used a stocking over a vacuum cleaner to pick up some of said small items that had fallen down earlier.
Later I used toilet roll core to hold some wrapping paper neatly, and I'm looking at using more to tidy some cables. I've made notes of several of the others and am putting them in my associative store. I expect I will use the "USB on TV to charge phone" idea at some point, I'll just need to remember it at the right time.
As for reddit, yes, perhaps I should go, but I have enough infinite time sinks already, and I'm disinclined to add another. If it pops up in a web search then I'll use it, but otherwise I'm unlikely to get started. I tend to be a bit obsessive, so not reading is better than reading and trying to limit myself.
And I'm not really a serious HNer, although sometimes people get the impression that I am. There are other things I do way more seriously.
Secondly, friendly recommendation - you should check out Reddit. You're a serious HNer, so I assume you care at least a little about the goings-on online, and Reddit is a big part of the internet now. See it, if only to be able to say that you saw it.
I barely visit Reddit myself, but there are a few things it's good for - for example, information about specific topics tends to be found in subreddits about that topic. E.g., I started playing piano recently, and to get interesting info on it, searched "piano reddit" in google. Not only are there generally good discussions there, some popular reddits like this one have an FAQ which lists links to lots of previous discussions you might be interested in.