Reddit mentions of NEW Norpro Instant Immersion Heater Coffee/Tea/Soup Electric Water Portable Reheater

If you look closely it's actually connected to a heating coil. Looks like you place it directly in the mug like this.

EDIT: From Amazon.

Maybe an immersion heater would help? https://www.amazon.com/Norpro-Instant-Electric-Immersion-Heater/dp/B01M0Q84BR

I have a zojirushi boiler/warmer, and I don't think it'll do what you're asking for. What it does is that it boils water, lets it cool to a user set temperature, and then keeps it at that temperature. So if you want hot water on demand, and you tend to need to heat water several times a day or convenience is really important to you, it's a great device. Mine is over ten years old and still working great. But it doesn't make the coffee for you.

The closest device I would suggest is an old fashioned one cup coffee maker. I got a $5 one from target nearly a decade ago, and it's pretty fast in terms of making one cup of hot coffee/water. It's got a reusable filter too, so no waste. This device is small, smaller than the water boiler, but it's still stashed away in the cabinet. Our household doesn't drink that much coffee, so most of the time, we just use the zojirushi and a vietnamese coffee filter. We used to have a pourover filter, but I don't know where that's gone, I think I lent it to someone and never got it back. My parents use a zojirushi and a pourover filter, or powdered coffee, or cold brew, they're coffee people.

Reminder: if you're only going to need a cup of hot water, you don't have to fill the whole electric kettle and boil the whole thing. You can boil just the one cup, or whatever the minimum water level is. It takes a lot less time to heat up one cup of water vs 2L of water.

Or boil however much water and keep it in a thermos to gongfu with during the day, pre heating the thermos will help significantly with heat retention. I use a 40oz stanley that I take to work.

I also have one of those small travel electric water heaters, and it works fine. I just have alot of kitchen gadgets, it's a weakness.

I don't have one of those instant immersion heaters ( https://www.amazon.com/Instant-Immersion-Electric-Portable-Reheater/dp/B01M0Q84BR/ ), which is basically a metal coil you can put in your cup of water to heat it, but if counter space is an issue, it looks pretty small and you could stick it in a drawer.

Like these

NEW Norpro Instant Immersion Heater Coffee/Tea/Soup Electric Water Portable Reheater https://www.amazon.com/dp/B01M0Q84BR/ref=cm_sw_r_cp_tai_AxWRCbBE42WG1

It’s only dangerous if it is raw electricity outside. The resister heating element is actually inside the metal tube.

An immersion water heater is more compact than a kettle, just be careful to only let it be on while immersed.
https://www.amazon.com/Norpro-Instant-Electric-Immersion-Heater/dp/B01M0Q84BR/

You can get an Immersion heater from Amazon or Walmart (or many other places) to heat up water for ramen or other soups. You could also make tea, etc. It's small enough that it's not a hassle to travel with, but cheap enough that it's not a big deal to abandon. Just don't leave it plugged in when you're done with it and make sure you have a safe place to set it down until it cools.

Amazon still sells them:

https://www.amazon.com/Norpro-Instant-Electric-Immersion-Heater/dp/B01M0Q84BR

I had some old ones picked up from my parents or a yard sale, but they were quite similar to this. It's a close fit, but not tight, at least on the ones I've tried.

"Use this lightweight and portable immersion heater for warming liquids (water, coffee, tea, soup and more). Ideal for home, office and travel"

https://www.amazon.com/Norpro-Instant-Electric-Immersion-Heater/dp/B01M0Q84BR/ref=sr_1_13?keywords=heating+coil+home+improvement&qid=1556521770&s=gateway&sr=8-13

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Solved

I have one and it's been pretty great so far. I did have to watch some YouTube videos to get it right though. I had some instances where the water would bubble up and spill everywhere when lifting the arms. The flair seems to be a lot more straightforward. With either the flair or rok I would recommend an immersion heater like this https://www.amazon.com/Norpro-Instant-Electric-Immersion-Heater/dp/B01M0Q84BR so you can ensure temps are where you want them to be. I did stop using it in favor of a portapresso Rossa pg air though.

I have never tried one of these, but this is the most compact type I have ever seen. They are called immersion heaters. https://www.amazon.com/dp/B01M0Q84BR

An immersion boiler would be the smallest and cheapest thing, so long as you have a bowl/vessel to cook in. Less than $10. Just don't ever plug it in without it being in water or let it boil dry, or it will blow out almost instantly.