In my experience the two most dangerous things in your home are a ladder you use alone and a mandoline. YMMV.
One snowy evening I was home alone, had a glass or two of wine, and used the mandoline without the thing-y to hold the vegetable on, and I cut my finger that bled like a mother fucker. Dripping onto the floor. I tied it up tight and sat there with my hand over my head for half an hour.
You can even get magnetic parts bowls from Amazon, or other places. I even screwed a small steel plate to the top rung of my aluminum ladder to stick one of my bowls to. (I have 5 of them.) 
What do you need five aluminum ladders for, do you stack them?!?? That is even worse than I imagined! 
Hey, I have cathedral ceiling in my living room. Two hanging lights we never use. The bulbs might or might not work. Who cares.
Ladders in my house are forbidden. Two many broken windows in the paned french doors to the deck. A broken window in the dining room. Scratches on the wall and celing. And a broken arm on me.
No Ladders.
I can live without the headache.
And it is a hack because it ‘hacks’ me off if anyone suggests it!
So there!
When you put a part-used tin of paint away, put the lid on firmly and then turn it upside down to make sure it’s sealed. This should stop a skin forming.
No. I have 5 magnetic bowls, in different colors. I only have 2 (different sized) ladders. 
Not just that, but put some newspaper or cardboard over the lid before you hit it with a hammer, otherwise you’re just about guaranteed to end up with all the paint in the rim getting sprayed out all over the place.
Another hack for painting is to put your brush and/or roller in a plastic bag (at least the business end) between coats. The paint usually stays wet enough that you can keep painting with a few hours or a day later and it’s a lot easier than trying to clean the paint off, especially if it’s oil based.
I’ll often rinse off the brush, but I’m not cleaning a roller. Those get tossed, so if I can do the whole job with one, it’s great. If it’s dried out when I go to reuse it, it’s not that big of a deal.
Oh, interesting. I wonder if that would work for us. What do you do with knives?
I have a cylindrical utensil holder up there for flatware and utensils, but anything sharp I dry off and put away right away. I found a wire metal letter sorter that works well for holding the dishes upright, or you could even stick a regular dish rack up there. (my setup is wider than it appears in the photo, it’s a standard wide rectangular sink.)
I use lingerie bags for washing socks, one for whites, one for darks. That way, when I pull them out of the dryer, the socks are all together and not stuck to other bits of laundry or finding there’s still a single wet sock that I missed taking out of the washer.
For washing dishes by hand, use a small bowl that has mixed soap and water in it. Dip the sponge or cloth into the bowl to soap up instead of filling the whole sink with soapy water.
Cupcake baking dishes (either small or large) are perfect for freezing single meal portions of something like pulled pork or chicken or spaghetti sauce. Freeze it in the muffin tin and once it is frozen, pop it out of the tin and stack in a freezer bag. It works with fruit for smoothies too. Ice cube trays work well for smaller portions.
A few years ago I got a new mandoline and had a friend over for dinner during which I planned to use it for the first time, to make scalloped potatoes. As I was getting the mandoline out, he said “let me show you how to use that” and took over the slicing. As he was slicing the potatoes he started a lecture: “You have to be really careful with mandolines, because if you slice too far, you can — OW!” Yep, he had sliced his finger.
The only time I’ve ever broken a bone was when I slammed my foot into a ladder that was sitting in my hallway as I was walking past it. Yes, I injured myself on a ladder without even stepping on it.
These are productivity hacks I’ve figured out for my particular ADHD brain.
My brain has trouble prioritizing. It latches onto things that feel important regardless of if they actually are, and the stuff that doesn’t feel important gets pushed back indefinitely. So I started doing this thing. If I have a list of things to do, especially one with a lot of older tasks sitting on it, I do the list in order, without stopping to consider what I should do first. It eliminates decision fatigue, and I end up getting a lot of old tasks done that I’ve been putting off forever.
If I’m feeling overwhelmed, I take out a sheet of paper and “brain dump” everything. Everything. I need to renew my driver’s license, I’m pissed at my father in law, I need to order a new bookcase, I need to improve my sleep hygiene, just get it all out there. Then I turn over a new sheet and write a three-item to do list.
I never look at the brain dump page again. For some reason writing all that stuff down really helps me focus and remember the important stuff.
I’m sure everyone is aware of the five minute timer for getting stuff done, but I have to recommend an inexpensive plastic timer called Time Timer that shows you in a pie slice how much time you have left. We have four of these now, in various rooms and offices, and my husband regularly recommends them to his ADHD clients. My brain processes “pie slice” time differently. I don’t find it as difficult to sustain work over a timed duration when I can see at a glance what’s left.
With stuff like this, the truth is you have to try everything and see what works. Many of the tips for ADHD such as time blocking are non-starters for me. I used to read a bunch of self help and I’ve gotten some useful info at times, but the truth is we already know how to help ourselves, we just have to be willing to experiment and learn.
I use a magnetic tool holder from Harbor Freight to hold knives and other gadgets. I painted it to match the wall under my cabinets.
Cheap and effective:
Not sure if this counts: don’t put drinks next to electronics. I’m continually amazed that this isn’t something everybody has figured out.
Shit, shower, shave. 
Especially if there are cats about…
You can use an old bicycle inner tube to make hundreds of rubber bands - use scissors to cut it cross-wise to whatever width you need, whenever needed.
Old inner tubes are also useful for lashing stuff together - they are like giant bungee cords without the hooks.
Coworkers get angry at me when I say “Again, I don’t care if you sit/eat at my desk, just pleeeaaase move the soda”, like I’m the asshole. I have a very strict ‘no drinks without a cap’ rule at my desk and even though it’s me that’s ruined more than one keyboard, and a laptop, by spilling things on them, the rule applies to everyone else too. Frankly, my not wanting to take an hour out of my day to go get a new keyboard and spend another hour dealing with everything else on my desk far outweighs you not wanting to put your soda in an equally convenient spot where spilling it won’t be nearly as big of a deal.
That one always gets me worked up.
Also, don’t touch my god damn monitor. I don’t want fingerprints all over it.
And here I was picturing you cutting the ring shapes out of it like you would if it was a sheet of rubber.