A lot of people had to get used to working from home very quickly. During the "early days" a lot of help was gathered from Twitter. Here are 10 points selected from a series of posts on this blog : Working from Home with Kids; Working from Home: Useful Advice: Ergononmics, Peripherals and much M...
I find it helpful to adapt arrangements so that I can work standing up: I had a standing desk at work. You need a mat to stand on. the advantage is that you move more, without having to make an effort to remember to do that.
It is possible to get fancy and expensive kit to do this but I got some Standidesks off etsy. They are glorified up turned cardboard boxes, only more robust and collapsible at the end of the day. I got mine off etsy.com and I notice that they have wooden ones now, which might not be so easily put away.