Today I came across this inspiring blog called Creative Live. Lots of good information here.
Here's a post that caught my attention: Five Drawing Exercises that will Turn Anyone into an Artist written by Emily Potts. One of the exercises suggests trying:
One Day, One Theme.
"Choose one theme or one kind of object, and only draw that thing during the course of a day. You can vary your approach to this by choosing an animate or inanimate object, a color, a size of something, things that are scary or make you laugh, or things that start with a specific letter."
"You can also use synonyms, such as things that move you emotionally versus things that literally move you, like modes of transportation. The more thoughtful you can be, the more you exercise your concept-building abilities as well as you hand skills."
Read the complete post for more ideas. Then take some time to check out the archived articles for more inspiration.