I have used LED lights in a coving around my living room ceiling. I used 15m of RGB colour changing LED tape and I can change the colour of the LED Tape with a wireless remote control which is pretty cool! You can use the LED Tape lighting outside under decking to add a cool feature effect. See these pictures to give you an idea. Here is a link to a whole gallery of LED lighting ideas..
http://www.instyleled.co.uk/gallery/ 
I've seen some people use them to decorate their porch so they could see their way across it at night without turning a huge light on that would attract moths. Other people like to use LED lights for art.
Good luck!
Light where you need it, like under cabinets, in closets, and more.
