I also get some of those requests.  Unfortunately, I cannot accomodate them.  We do have some that come and play music occassionally at our long term care facility and I strongly recommended to the Enrichment team director to have each of them (at minimum) read and sign a confidentiality agreement.  They do not inter mingle with the residents, simply entertain.

We allow one time volunteers.Projects vary from having the volunteers play musical instruments to helping clean one of our therapy gyms. We also have used these volunteers to help with grounds clean-up. Hope this helps!