I think this is a great idea, and hope your documentary is successful at bringing this type of work to the attention of more people who can design more helpful items for low-income people all over the world. I hope you are also considering ideas that can help the rapidly growing sector in the US of the poor, especially the elderly.
I am not a designer, nor am I wealthy, but I have some money set aside each year for donations. Where can I send a donation to help your project?
Let me know at firstname.lastname@example.org.