It depends on what type of "care home" and how far progressed the AZ is.
Based on the home where my wife is I'd be reluctant to bring in children other than to visit in their room, and then relatives (as in grandchildren) not the local brownies.
Very few watch the cinema screen and very few join in with singing events, in fact these things seem to be more of an annoyance to their routine that they achieve.
The suggestion of Scrabble
, how can people who can't string a sentence together play scrabble, as I say it depends what you define as a care home and how far advanced the AZ is with them.
Positive bit, I agree with the pets idea, but they have to be animals that very passive as unpredictable reactions can happen, as always when taking animals into someone else's home (and it is the resident's home) you have to work around the people who don't like it (not them work round you) and remember that culturally some people don't like animals in the house (dogs in particular) so residents or relatives may object.
K