It is the International Year of Light which is something you could spend a good 15 minutes researching and light festivals from previous years produce some amazing images to write from. CERN also has some interesting images here which you might want to check out.

You might also like to create a list of qualities you think light has, or types of light.

Are you afraid of the dark?

Can light be harsh – all of these things can spark a poem.

If you are still stuck after writing the list, then write a sentence for each word and see where that leads.