I refuse to stop mentioning my wife 
You know, oscillating fans, the little 12"-20" fans that rotate on a pedastil with three speeds, usually? As a relatively poor kid, the air conditioner in the bedroom is the first one I've ever owned in my life. I grew up around these rattly white plastic fan things. Three-blade, cheapo plastic, bought-from-walmart $20 specials. Usually Intertek branded in North America, because lol. 
For most of my life these goofy things have just been ambiently existing objects in my house, I'd dust em when needed. Recently though, one of the older ones, (mfd Oct 2013) a real generic 16" job with a garbo aluminium stand, started running really slow.
At first I assumed it just had electrical issues, y'know bad caps or a short or resistance, whatever. When I took it apart today though I noticed there was a ton of hair wrapped around the center shaft that turns the blade. (We both have extremely long hair) Cut it all away with a utility knife, but at that point, with the fan's cage open and the blades off I got curious... 
Unscrew the back of the cage from the front of the fan body, (where the motor is housed) look inside, turns out the entire thing is clogged with dust and hair, mostly cat hair. Got a duster can and blew it all out, the thing expelled a cloud of fuckin' dust on my balcony 
but when I got it back together, while it now ran fullspeed (wow!) it made a pretty painfully loud squeaking/scraping noise while spinning.
I wasn't real sure what to do, but my wife suggested oil... not motor oil, we don't have any since I'm not a gearhead, but like, canola oil or sunflower oil? Just applied with the hard end of a cotton bud along where the shaft connects to the motor, and it'll trickle in??? I assumed canola oil would be conductive and this sounded like a really bad idea to me, I was sure it'd explode. I even put the fan outside, closed the balcony door and ran a cable inside to test, in case it magic-smoked itself.
Sure enough though, dumping food oil down the motor of a standing fan results in perfect silence...? 
Reassembled the thing, buttoned it up and it was literally good as new. Oscillates smoothly, spins stronger than when I first got it, and is dead silent. We did it to our other two goofy canadian tire special fans the same way, and it's been great for them too, somehow. Fucking canola oil...
I make this post mostly because I have never even heard the concept of repairing/servicing these standing fans entertained. It's like toasters, or how non-techbrained people view computers: just a simple appliance. I knew about dusting them of course, but otherwise for my entire life whenever one crapped out, BANG instantly trashed! Another $20 down, unlimited disposable replacement upon standing fans! Turns out that curiosity and basic disassembly ability (all we used was a phillips head screwdriver, a duster can, the aforementioned oil, windex and paper towels) will probably let you keep these dumb things running for a lot longer than ten years. Whoda thunk it??? This does make sense, given that many oscillating fans are on 24/7 in the summer. Something like that easily earns a bit of maintenance, and this is gonna be a yearly check-up activity for us now!
So I guess the point is, if you're not rich enough to air condition every room where you live, or even just have standing fans anyway, give em some love and they might benefit a lot ✨
Don't you all have a can of WD-40 or something laying around? I'd like to imagine Italians lubing machine parts with olive oil lol
This is actually the real reason why the Axis Powers lost World War 2—Stalin didn't do shit.
WD-40 is not a lubricant, it's more a loosening abrasive for rusty screws or bike pedals. It'd probably corrode a small motor and make it seize!! Motor oil or maybe lithium grease would be best. I am dead curious to see how long canola oil lasts though!
Also
yah, canola is also not a great lubricant lol, it gums up eventually (not that long in my experience, but maybe in a fan it will fare better somehow)
3-in-1 oil is similar viscosity to canola but actually designed for lubrication, decent enough for household stuff like this usually! But a good grease is also nice
I will get me some of that, I only used like 5ml of canola though so I'd hope it would't gum up... It's not sticky, should just dry up eventually...
If it does, you can just clean it off with dish soap
I just mean over time sitting in air it like, dries out, getting much thicker and stickier, not that it will physically impede the fan turning by quantity
it’s likely not going to gum up too much, but it will some. It is probably going to partially polymerize, stick, and cause more gunk/fuzz to stick long term.
A comedy thread found when researching canola oil for lubrication
Found out that pig lard was used to lubricate machinery in factories for a while when I read on a thing of aluminum that it was kosher and looked at why a kosher seal was needed for foip.
WD-40 used as a loosening agent is ancillary to its intended purpose ; a dielectric water displacing spray for ‘drying’ parts, so think removing water from automotive distributors/spark plug boots etc. . WD-40 is the 40th iteration of Water Displacing fluid, hence its name. It’ll work in a pinch as a lube but neither long term nor heavy duty.
Also, it shouldn’t corrode motors or cause seizing.
Wait really, it's for drying??? Dang...
Not drying in the conventional sense, like drying with a towel. It's moreso like, removing the water from stuff and just replacing it with something else. That something else is not electrically conductive so it doesn’t cause current creep/arcing/shorting.