Turning Point Trust works with people with mental health or addiction issues, teaching arts, crafts, gardening and the like.
Faced with the challenges of having to relearn basic life skills, Maynard said he wanted to help the Stroke Foundation which has been supporting him through his challenging journey.
"I also wanted to show people there is life after having a stroke. Some tasks need two hands but while one of my hands is useless, you only need one hand to paint," he said.
Stroke Foundation Tauranga's community advisor Jessica Copperwayte said: "It's absolutely heartwarming that Mike is donating the proceeds to the Stroke Foundation.
"We're over the moon that he has chosen to do so and is helping to get the message across that there is definitely life after a stroke. The amount and quality of artworks Mike has produced in such a short time have blown us away."
The funds will allow the Stroke Foundation to continue its field work in the community.