Thanks for the suggestions! I will try a cushion/towel and maybe get dh to help me build a platform. It has to be big enough for both feet though.
as far as other seating, I almost always put my feet up on the seat. Drives my dh crazy but he has longer legs and doesn't understand how uncomfortable it is to have that seat pressing on your legs. He used to yell at the kids for having their feet up on the couch until I told him it literally hurts to sit like he does when we're all shorter than him. I don't know if he believed me but he doesn't say anything anymore.