Hi. I'm glad to hear you are thinking of alternatives to provide an active and productive lifestyle for your spouse.
I suggest trying your local area agency on aging
to see if they have any resources. The website for the NW Arkansas "chapter" is http://www.aaanwar.org/
Likewise you may try the Elder Care Locator http://www.eldercare.gov/Eldercare.NET/Public/Index.aspx
And...the Alzheimer's Association may help. They often have their own programs to meet this need. http://www.alz.org/alzokar/
There are many resources, but I would recommend starting here first.
In addition, ask around the community to see if any senior centers, adult day programs, or Churches/Synagogues have anything.
I hope this is a helpful start.