Old people get lonely, and without company, they are at high risk for developing dementia. It is the responsibility of younger people to care for the elderly.
Contact a Nursing Home- You'll need to get in touch with a local nursing home to see if it will be possible to hold a performance in their facilities. There might be scheduling issues or they might just disapprove of this idea, either way keep trying until you find a cooperative location.
Find Your Band- Ask around online and on social media, most bands would be willing to perform free of charge for charitable reasons.
Prepare- Have the band rehearse classic songs that were popular during the early adulthood of the retirees. Make sure the band is well aware of their audience so they know how to perform appropriately.
Bring People- Recruit other non-musical volunteers to join the nursing home patients in the audience and socialize with them. This will help better the overall experience for the retirees.
Document the Concert- Take plenty of pictures and videos of the performance. Post these videos online to help the band's publicity and to inspire others to volunteer at the home.
Get a Crew- Ask one or two of your friends if they would be willing to help you with some lawn work.
Look- Try and locate some elderly people in your area with unkempt lawns or struggle to handle a mower. The best way to do this is to drive around on weekend mornings when people tend to mow.
Offer Help- Get in contact with the elderly people you find and tell them that you are providing free lawn care for seniors.
Prepare- Work out a schedule with your volunteers to plan the order and dates you'll mow the lawns and give them specific tasks. You also need to make sure that you have the proper equipment ready to go.
Mow- Go around and take care of their lawns. It also helps to chat a little with the elderly folks; they always appreciate conversation. If their lawns begin to look raggedy a couple weeks later, offer lawn care to them again.