A suggestion:

We can place some paper cranes on the roof

• In China, Korea, Japan and Vietnam a crane is considered auspicious.
• It is one of the symbols of longevity and is often represented with other symbols of long life, such as pine, bamboo, and the tortoise.
• Vietnamese people consider crane and dragon to be symbols of their culture.
• According to tradition in Japan, if one folds 1000 origami cranes one's wish for health will be granted

Information from: Wikipedia