looking through other art helps me alot. When I see someone's AWESOME drawing it makes me love it and also envy it I feel like I need to sit down and start drawing something awesome too. Then just start with doodling for an hour or soo, then I choose the best sketch and try to make it somewhat interesting and paint it.
My list 1. Save all the images on the internet that you come across and love, keep a big folder (mines 3gigs) 2. Pin up pictures of stuff you love on your walls 3. Take pictures of cool stuff you find when you are out and about 4. Write down things that pop in your head, keep a small sketch book on you
Just expose your stuff to as much cool stuff as you can, something's bound to come.