After a hospital stay my 92 year old mother needed balance and endurance therapy.  The balance beam although hard work for her, has helped a lot.  This is worthwhile, I made it a rule she had to use it everyday.  I set it up in the hallway and she walked sideways down and back, then rested and walked toe to heel down and back and then rested.  Every week she improved, after 6 to 8 weeks she could do the whole routine and only needed to rest at the end of it and was walking around the house with her cane.  There were other exercises we did everyday, but I felt this made the most difference.