Any ideas on social stimulation for elderly uncle?

My aunt recently had a stroke but is home now with some outside help. My uncle is 95 and has the early signs of dementia but is a very social person and desperately needs some social stimulation. I have 2 problems- finding an adult day care near their home and getting him transported to and from a program. I’ve searched for both senior centers and adult day care but there is nothing really near by. I get over there once a week but he definitely needs more interaction than that. Any ideas?