I find the best inspiration with a given theme or subject. That's why I love the monthly swap.. everyone has such wonderful and diverse wishes, it's impossible not
to be inspired
Go check out the ongoing ATC gallery for some examples. There are all levels of artists, all sorts of creative people, and I bet they will inspire you!
It's also a great way to challenge yourself by picking a theme that "scares" you. For example, if you feel thou can't draw animals, making a cat ATC can inspire you to push your creativeness forward.
Sometimes experimenting helps to inspire as well. By some new papers/pens/stamps... Whatever really, and see what happens.
Hope that helps a little