Summer solstice will happen this year on June 20th at 23:59 hours UTC (i.e. today), and there Summer starts!
More sunny days and time to spend on open air activities (like a good Truck Trial ;) )
You could find many LEGO glasses designs online and many of them being TECHNIC, but I liked particularly these sunglasses,
Cool!? Build yours and get a new look for the summer. :P
More images and instructions (as if they were really needed...) at BS.