Long story short:
A few months ago my dad suffered a stroke brought on my unmonitored use of prescribed heart meds (doctor's fault).
He lost control of half of his body at first, but after some medicating and physical therapy he has regained most of it.
Although he had the rehab rundown after his hospitalization and has been doing it ever since, he feels as though his balance isn't improving very much and he could be doing more.
You might be thinking that he's just talking out of his league, but here's a bit of backstory on him - he is a former athlete, has a well built body and has participated in several skiing competitions, so he is no weakling.
I tried googling this, but most of the information was either not very detailed or it was simply a suggestion to seek a PT and at the moment he doesn't have the money to afford more sessions with a qualified physical therapist.
tl;dr
What are some good stroke rehabilitation exercises based around balance?
The equipment that is available to him is as follows:
* One of those big medical balls
* That half ball (one side is flat, other is round and spiked) thing
If you have any questions regarding his physical capacity, the exercises he has been doing or any other details, I'm afraid I can't answer them because I do not live with him or even near him and all I know about his current condition is what I wrote in this post.