Holt is currently patron, after previously being a committee member and president.
Up until recently, she produced a monthly newspaper for the trust's members.
"It's a wonderful organisation and I enjoy helping."
Holt is also secretary of the Norfolk Women's Institute, and an active member of the Waitara Savage Club and of her local marching band.
Holt says she and other Women's Institute members have been knitting beanies for school children.
"The federation takes the beanies to schools and gives them to the children. It's something to do for the children."
The Norfolk Women's institute has also been knitting singlets for premature newborns at Taranaki Base Hospital's neo-natal unit.