What about a Monarch Butterfly scenario. Start with Milkweed which is what the caterpillars need to eat. Have a female lay her eggs on that milkweed and watch the caterpillars grow end eventually go into chrysalis and eclose a beautiful Monarch Butterfly to start the process all over. Here in the USA they are starting to become endangered, and maybe more people will pay attention and plant milkweed and nectar plants in their own gardens.