There are many organisations and private initiatives all over Sweden supporting Ukrainian refugees here in Sweden. They all use Facebook and many use Instagram. In many places also churches and the Red Cross offer help
Search facebook for "ukraina" & "your city/area"
Listen to the pod cast series - Voices of Ukraine - 10 episodes
Please spred the episod 10, about Hlib 19 years old, to schools. It is a really great material for discussions in class. It is unusual to hear the young people talk on this theme.
Buy the book "Vi står kvar - även om betongen faller" av Larisa Mischenko - Aid4Ukraine