It is good to keep your Alzheimer's patient occupied and active while they still can, whether inside or outside before they become immobile.Choose activities that will stimulate anything too complex will frustrate them and you will have other emotions to deal with.
Its is good to have your patient get some amount of sunlight everyday, whether walking or just sitting for a while.
You can also play games and do word search or puzzles depending on what stage of the disease they are at.
You can also give them family photos to search through and select their favorite ones and place them in a special album so they can have with them to look at whenever they like.
Get them a stuffed animal or doll to hug, they like to hoard things, it keeps them comfortable.
A good daily amount of light exercise helps to keep their bones and muscles strong. Exercise improves their balance and also helps them to sleep better.Don't over do it remember they are not training for a marathon, you are only trying to keep them healthy.
If you can afford it you can higher a personal trainer or a physical therapist, someone who has experience working with Alzheimer's disease patients
While doing the light exercises may sure to look for any signs of discomfort, pain, dizziness, shortness of breath, if you notice anything you should stop the exercise and consult their doctor for advise.