Answer:
Dear [Name of Manager],
I'm writing to thank you from the bottom of my heart for giving walking sticks to older people in our community. One of these walking sticks went to my grandfather, and we really appreciate your kindness and generosity.
As you may know, many older people have trouble moving around, and having a walking stick can make a huge difference in their daily lives. Thanks to your kind donation, my grandfather now has a sturdy walking stick that he can count on. This has given him a lot more freedom and mobility.
Not only did your donation help my grandfather, but it also helped a lot of other older people in our community. It gives me hope to see someone like you who wants to make a difference in other people's lives.
Again, thank you very much for being so kind and giving. We really appreciate your help and hope that you will keep making a difference for the better in our community.
With best wishes, [Your Name]