.... bins for sanitary products that actually work. (Yes, I know - Mooncups - but they don't work for everyone or in all situations)
Even leaving aside the fact that they're rarely emptied regularly enough, these things are useless. The little foot-depressor thing is never where you can reach it - often the bin has been placed the wrong way round so the depressor is against the cubicle wall. Even if not, it's rarely in a place where you can easily access it while holding the full tampon you just removed, hence still not having been able to pull up pants or trousers. So you try to sort of nudge up the little hatch without touching it, because it's covered in blood stains and probably a pad whose sticky bit means it's still stuck at the top.
Like I say in the title - I have no idea how these could be better, but I feel sure they could. What would anyone else patent, if they could? (or does anyone know how these could be better? or, better yet, have any knowledge of better systems?)