Let there be --

--Light.
Still not come down to earth after our fortnight holiday and celebrations.
Got home late last night. Later than it need have been thanks to Immigration in Birmingham seeming to be run by a very skimpy night shift (why is it more difficult to get into your own country than anywhere else in Europe).
A hastily thought out idea for today's challenge hasn't really worked as planned.
Thanks to 60plus for an interesting challenge.