About 50 children aged from newborn to 15 had benefited from their generosity although initially they made larger families a priority.
"I wanted to help them first because it is more difficult for them to get gifts for individual children."
Toys given away included doll houses, leap pads, mixing/sorting toys, electronics and some clothing.
Her charitable works have restored at least one recipient's faith in humanity.
"It's nice to know there are still good people out there," Lesley said.
The mother, who did not want her last named used, said she could not believe her luck when Mrs Kapi delivered gifts for her children.
Lesley has four children living at home and two step-children. They live on her husband's wage.
"I was in tears thinking about how we were going to afford Christmas and freaking out, it was quite dire. We have been struggling a lot this year."
But Lesley noticed Mrs Kapi's online post.
She responded and Mrs Kapi delivered six wrapped gifts with each of the children's names and ages on them. "It just blew my mind and was absolutely amazing, she has certainly made our Christmas. She is wonderful and I could not thank her enough."
The two threads on Facebook had generated more than 100 comments and 81 likes.
However, Mrs Kapi said she had to ask people to stop posting praise as they were clogging up the system. "I didn't want any thanks, I just wanted to do it."
The cousins now plan to make the gesture an annual tradition as the experience had been heart-warming, she said.
Ms Mason said her boys Caelum and Ethan selected almost new skateboards and Gameboy units to gift while daughter Samantha chose preschool farmyard animal and baby toys. "You know we may not have a lot but we certainly have more than others. I think if more people start doing this we will be a better country."
Leftover toys and clothing were being donated to the Huria Kohanga Reo, Mrs Kapi said.
