iPad Pillow Stand (iPad 5th-6th gen. 9,7") Important: only for iPad with Cover (max dim. cover 175x11mm width-depth)

thingiverse

I've got an iPad sleeve that's really catching my eye: https://www.amazon.it/gp/product/B06XZH8SKF/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1. Other sleeves will also work, as long as they're not too thick - 175mm in width and 11mm in depth is the maximum size. If the sleeve only covers the back of my iPad, I can put it on a surface with the Home button at the bottom. In that case, there are holes to let the sound out, and it sounds really clear with a bit more volume and deeper bass.