Commenter Annie in Petah Tikva noted that her friends also initiated another project: "They set out camping kits all around the north of Israel in popular hiking spots. Inside the kits is a photo of Rina z"l, an explanation of how she was killed, and a suggestion that you donate any unused equipment of your own "in order to spread the light that shone from Rina". The kits contain coffee pots, a camping gas and other accessories to make your hike pleasant."
Rina's family also turned her death into opportunities to help people.
The Kol Rina association has multiple projects in her memory: a project to provide communal Shabbat meals for anyone who needs one, a project to limit time on smartphones and spend more time with families, the establishment of 80 Torah study groups in Rina's memory, an initiative to construct safe hiking paths and lookouts throughout Israel, a matchmaking initiative, and more.
What is amazing about this is that this is not unique by a long shot. There are so many incredible initiatives that have been created in Israel in response to terror attacks by families of victims. It is perhaps the best testament to the resilience of the Jewish people to turn tragedy into opportunity to help others.