These are purchases I've made over the last couple of years that I am really happy with. It's not necessarily "OMG! Bestest Evar!!!" stuff.
I use a CPAP and it works best to sleep on my side because of it (if I sleep on my back, I stuff up and can't breathe, for some reason). However, I also have arthritis in both shoulders and the pain from the pressure on my shoulder would wake my up at night.
I ended up getting a Medcline pillow and it's been a lifesaver. It takes all pressure off the shoulder and also makes it easier to keep the mask on at night, too. It took a little to get used to it but I couldn't be happier with it.
Because the pillow is pretty massive and we were due a new mattress anyway, we then upgraded to a king sized mattress. We needed a new bed frame because of the change of size but didn't like any of the frames the local store had. I found a basic frame that we liked on Wayfair (we live in an old farm house and kind of decorate for that) so ordered it. I wasn't expecting much for 169 bucks but it is really solid and nicely made. My only quibble is that the bolt heads are chrome instead of white but I really don't notice anymore.