Failing that, a door with one edge rested on a radiator and the other a stack of cardboard boxes.
I work from a proper ergonomic office desk now but it beat many other alternatives including a dining table and various purpose-made 'home office' desks.
(Accepting I got lucky with the height of the radiator).
In the same vein I worked off a folding table for a long time. It was cheap, large, and surprisingly sturdy. If I needed the room it took up back I just folded it away.
If you live and work in Denmark, your employer is technically responsible for providing you with a height adjustable desk, chair, keyboard, mouse and monitor, if they expect you to work from home.
Working from home is not an excuse for the employers for allowing you to work in an un-ergonomic environment.
Finally getting around to getting a proper desk/chair/monitors really made me enjoy working from home a lot more. I don’t do it terribly often, but I really feel like it makes me more productive.
Also working with a remote colleague who doesn’t have good webcam/microphone/headphones is an absolute nightmare. I’m sure most of us have had colleagues that were frustratingly hard to communicate with remotely, and I’m sure most of us have avoided communicating with them because of it.
You're missing out on the #battlestation #setupinspiration trend. WFH is a thing, why not make yourself feel comfortable? A monitor arm and a vertical laptop stand save space. Add a (standing) desk with a nice surface, quality keyboard + mouse, and maybe a small desk plant.
For anyone in the same position I can vouch for IKEA MARKUS office chairs. Working from a dining room chair will leave your back sore after a few days. For desks I'd stay clear though, all the IKEA desks I've had have ended up with annoying wobbles.
I have used a number of Markus-chairs and they are pretty good indeed, and not that expensive. The most surprising thing was when the cylinder in mine, after years of use, started to slowly drift (some internal gasket leaking or something) downwards after raising the seat. I contacted IKEA if I could get a new cylinder for it, but it turned out the 9 year old chair still had some warranty left. A delivery man brought me a brand new replacement chair and took away the old one.
I got an IKEA desk years ago, forgot the name, and it's pretty good; modular design, height adjustable, really sturdy metal frame and wooden top. I think the wood has warped a bit over the years though, very subtly.
The downside is that it's no longer in production, so I can't buy another module to add to it. The ones they have now are a lot flimsier; thinner metal, thinner table tops, etc.
If I ever move I'll see to orienting myself on the desk market. And get a used chair, I spent nearly 500 on a new chair from an office shop but it's not as good as the ones I've had at work before. I googled and there's big webshops that sell refurbished office furniture, including the best chairs ever, for under 300.
I tested a few of these in store, and at low heights they were fine, but when raised they were really wobbly. I've used standing desks that wobble when you type, so the monitor wobbles, and it's really distracting to work like that.
Maybe they just didn't put it together properly though in store. Is yours like that?