It's getting cold! 😓
What are you using to heat♨️ your place?
Miners
Many people can now make use of these to heat up their 🏘️houses/rooms/flats. And to be honest is not a stupid idea. I mean, if you at least compare with those OIL based electric heaters. The resistance based ones too... the fan helps the air to quickly reach the temperature you most desire.

This can be done (for a long time) with miners. They are ASICs based machines of witch >95% (fans consume cinetic energy) of the energy is released through heat dissipation. So, for example, if your miner consumes 500 Watt, it means that around that amount is being put into "heat" over the air around the miner. Then, "fans" usually help them cool down but they also have a much more important function, if you consider as well, they can also project heated air into specific locations, increasing the heating efficiency on the area you want.
Computers
They are also a combination of what a miner is, but they are usually much less power hungry. Depending on your PC, they can release more or less a good amount of energy to heat up the room they are located at.

I once had a 1kW PC, totally water cooled. It only had two GPUs .. but because I was overclocking at the time, both GPUs and CPU, that made things go wild... CPU itself was releasing 350W alone. This was a 6-core Intel Xeon at 5.2GHz. What a time! 😎
Then I had the main GPU that by default would consume around ~300W, overclocked... I have managed to get up to 600W once (not stable). Did manage to stabilize it at around 530W. Then you add the additional GPU (just for compute, not display), the remaining components, like chipsets, disks, fans, DC converters and other usually irrelevant components... and BOOM! 1kW consumption...
Storage units...
You might not see right away but they are quite a good deal of heat, especially if you have a lot of spindles (disks). They usually add up from 5 to 15 Watt per disk (depends on the model and RPMs usually). If you happen to have a NAS at home.. with lets say, 12 or 15 disks, then you have at least, just on disks, around 150W just from disks.
I currently work on HPC where my main area is Storage and Filesystems. At my work place, we have a storage that does 140GB/s and has around 2K disks! Because these are Enterprise level disks, I would put power consumption around 15W minimum (did not check). So, this means, a 2k installtion, is releasing 30KW of heat just from disks! Crazy right?! Imagine the Cloud Datacenters, where there are up to milions of disks...
Energy Transformation
In addition to all the above, you have to consider that current energy being consumed by your devices might be optaining it from AC to DC. This is usually involved around a 80-90% of conversion efficiency. Which means that remaining is being released as heat... So, if you see your PC software saying you are consuming around 300W on Power, then you might be consuming 330W or more... being those 30W released as heat as well.
Cooling Solutions
Consider cooling solutions that harnest many devices in one go. I mean, it can be a single Huge fan... with a very tight controlled package that allows the air to flow and cool everything very efficiently... or it can be a huge loop of water cooling that cools, CPU+GPU+DIsks+etc...

There is no BEST solution, because it all depends on the ammout of energy you are consuming, the technology and the temperature you are exposing your hardware.