Help with Hope: Support and Care packages: https://helpwithhope.org/about/
Helping Children when a family member has cancer: https://www.cancer.org/treatment/children-and-cancer/when-a-family-member-has-cancer.html
Kamp Kesem: free summer camps for children who have been impacted by a parent's cancer. https://campkesem.org/minnesota/
Caring for siblings of seriously ill children: https://kidshealth.org/en/parents/sibling-care.html?WT.ac=ctg#cattalk
Books regarding illnesses:
"When Someone has a Very Serious Illness" by Marge Heegaard
"Our Mom has Cancer" by Abigail & Adrienne Ackermann
"You Are the Best Medicine" by Julie Aigner Clark (about breast cancer)
"The Hope Tree: kids talk about breast cancer" by Laura Numeroff and Wendy Harpham, M.D.