ClassyHatter

Depending on your needs, virtual machine might be the easiest solution.

There's a bug with the side buttons. After you long press a side button, the next short press won't do anything. Kind of annoying.

Their "brand-new UI" isn't much of a change. At least, I haven't noticed any significant improvements. Toggle buttons are now rectangle, instead of the rounded pill shape, and some icons are different. I think they changed the system font, but I changed it back.

Dark Mode in Neo Reader is an improvement, except that I don't use that app. Quickly tested it, and it doesn't seem to invert images, so you won't see them in dark mode. Systemwide dark mode would have been a significant UI improvement. Hopefully they'll come up with one some day.

The best improvement I have noticed is the new anti-flicker feature. When using "speed" refresh mode (I think it's called "balanced" on other devices), the display flickered annoyingly if there was any animation.

Loose-leaf tea steeped in a gaiwan, which ever tea leaves I happen to have.

I am so oversensitive to caffeine, that I tend to lose my sleep if I drink even a cup of coffee a day. So, if I drink coffee, I prefer decaf. There are some good decaf coffees nowadays.

Fun fact: Black tea is called red tea in China, because of the color.

L-theanine might help with caffeine's side effects. Theanine is a compound found in tea. It's believed to reduce the negative side effects of caffeine, without affecting the positive effects of it.

Absolutely bonkers, they were testing that thing so close to population. There are residential areas within about 1km/mile from the test site. In one of the videos, it sounds like the blast wave destroyed some window. So, even if that thing would have only exploded during the test, it would have caused harm in those areas. Luckily, it landed on an empty area.

Finland indeed is UTC+3 (EEST, East European Summer Time), so your times seem correct.

Raparperiä syödessä kannattaa muistaa, että se sisältää suuren määrän oksaalihappoa, noin 300mg:stä jopa 1400mg:hen per 100g. Turvallinen päivittäinen oksalaattien saanti on noin 200mg. Oksaalihappo ei tuhoudu kuumentamalla, vaan se ainoastaan liukenee osittain veteen kasvia keitettäessä. Oksaalihappo sitoo mineraaleja, erityisesti kalsiumia, mikä on välttämätön mineraali mm. hermoston toiminnalle. Kalsiumoksalaatit saattavat vaurioittaa munuaisia, aiheuttaa munuaiskiviä tai muuta vahinkoa eripuolilla elimistöä. Oksalaatteja on myös muissakin kasveissa, esimerkiksi monet tumman vihreät lehtikasvit, kuten pinaatti, sisältävät suuren määrän oksalaatteja.

Fan Control is great. Like you mentioned, the possibility to create mix fan curves is really helpful. For example, if either CPU or GPU gets hot, you can set all the case fans to ramp up. There are good guide videos on YouTube that shows how to set it up.

When I read scifi books, I like to use Prompt. It has a nice scifi-y feel to it at max boldness. Maybe at lower boldness level it's good for your use case?

I don't use other sans-serif fonts so I can't give other recommendations, but Roboto and Open Sans are popular ones. The type of fonts you are looking for are probably sans-serif fonts. You can google for popular sans-serif fonts or browse some font databases like Google Fonts. Google Fonts has some filters so you can browse only sans-serif fonts and then choose the sorting.

The font should have at least regular, bold, italics and bold italics styles as those are pretty common in books. If the font lacks any of those styles, Kindle will fake the missing style but the result might not look very good. Kindles also support variable fonts - that was added in a firmware update a year or two ago - so you can use those kinds of fonts as well.