Cardboard, green paint, scissors, glue, pine cones, branches, leaves and anything else you can find around your campsite
Cut the cardboard to whatever size you like. Cut a hole in the middle that is slightly smaller than a standard photograph. Paint the cardboard green and allow to dry. Arrange branches, pine cones and anything else you find onto the frame. When you have decided which pieces go where, remove them and apply some glue to the back. Place on frame. Start with the larger pieces and end with the smaller ones. Allow to dry over night.
“The same frame can be made if you are at the beach. Paint the cardboard brown, allow to dry then glue sand, sea shells and anything else you may find.” “Only use materials found on the ground. Do not damage the environment.”