Go to walmart garden center they got lots of stuff on sale about half price. You may find something. Plenty of folding canvas stuff and directors chairs, portable for inside and out.

Ray lost a lot of weight after his strokes and lost most of his "padding" so I bought a special foam cushion and used to take it in the car etc for him to sit on. That seemed to make him comfortable.

We also used a big soft pillow behind him as without the weight he seemed to feel he was at the wrong angle in the armchair. You just need to spread the pressure evenly and that helps you feel comfotable.

Hope you can find a way around it so you can relax more easily.

(((Hugs))) from Sue.