Kyley Filer posted that she was keen to donate and was also going around friends and family. Bobbie Fantham also volunteered some good quality children's clothes.
Others posted their expressions of sympathy to the family.
Whanganui Police and the Whanganui Fire Service were back inspecting the house yesterday and the property was being guarded by security.
Police would like to hear from anyone who witnessed the fire or noticed anything suspicious in the area at the time.
Anyone with information is asked to contact Whanganui Police on (06) 3490600 or Crimestoppers on 0800 555111.