I had at least two pyjama cases when I was little, one of them was shaped like a koala bear and it had scratchy black plastic claws, and a zip on the back of its neck and you undid the zip and stuffed your pyjamas inside it. I'm not quite sure what the other one was like - plain I think. I'm not quite sure whether this was to fool burglars intent on stealing your pyjamas who would be looking for pyjamas rather than cute stuffed toy things containing them or because it was a way to have a stuffed toy on your bed without embarrassment if you were a grown up.
Like I said I'm not sure either way but I adored my koala - even if it was uncomfortable to sleep next to because of the plastic scratchy claws and I was very upset when my Mum deemed it was time for him to go in the bin - I'd somehow got felt tip all over his tummy and it just wouldn't wash off. I was quite upset but consoled myself with her argument that I was now a big enough girl to just fold my pyjamas and put them under my pillow instead.
And she was right - pyjama cases are a right load of faff really when you can just fold your pyjamas up and put them under your pillow instead. Mind you the pyjama sized hole inside a pyjama case was useful for storing contraband on occasion - I seem to remember secreting Club Biscuits inside of mine once - back in the day when they really were covered in lots of chocolate and it was a delight to eat the chocolate off the sides and top of the biscuit before crunching the now slightly soggy biscuit itself. Orange ones were my favourite but I also liked the ones with raisins in too.
I'm not sure if you can still get club biscuits but a quick tinternet search shows me that pyjama cases are still very much a thing and available in all manner of branded character versions and that most double as pyjama and hot water bottle cases. That's progress for you. Hot water bottle covers were unheard of in my house then (I now have lots - mostly with skull and crossbones on but I also have a Spongebob one) so you scorched your feet on the meltingly hot plastic for as long as you could before moving it away and it was awful when you came across it in the morning - by now freezing cold.
We didn't have central heating and the only heating upstairs (aside from a two bar electric fire which you only got the use of if you were poorly) was an ineffectual electric heater positioned high above the bathroom door - which smelled of burn when it got switched on for the first time after the summer. I was also reminded of the things I now take for granted which I didn't have when we were younger this week with the news articles about census results. I've always had an inside flushing toilet but my grandparents didn't - theirs was at the bottom of the garden but at least it was theirs and it did flush. Most people now have a washing machine - we used to use the launderette at the bottom of the street and I can still remember the awe and wonderment when my Mum upgraded from having just a spinner to having a twin tub as well. We had a phone box at the end of the street - don't think we had our own landline til the early 80's and then it was a party line.
Misnamed as there never seemed to be any partylike goings on it at all. Now of course people are more likely to have a mobile phone than a landline.
I'd be lost without my washing machine, I think I could just about manage (but wouldn't like to have to) without central heating and double glazing. I could cope without a microwave too - at a pinch I could manage without my mobile phone too but please don't take my washing machine away. I have however been managing quite happily for years without a pyjama case which means a)I really am almost a grown up and b)they really aren't that useful after all.