Along with the meditation bench, my dad and I built an adjustable platform calf stretcher for my sister that folds for easy storage when you're not using it. She has had one on her wishlist for a few years now but they are hard to find and sometimes expensive. She describes her calves as stubbornly tight and although we built it because we knew she wanted one, I was skeptical of how useful a piece of equipment it would be. To my way of thinking there was really no difference between the old "prop your foot against a wall" method. From what I read while researching them, a platform stretcher is really useful because not only can you stretch both legs at once, it shows you instantly how tight your calves are and if one is consistently worse than the other. Once we got it together I stepped on to try it out and fell in love. It feels SO good. I may just have to whip one up for myself.
If you want more details on how we built it just leave a comment and ask!