When my kids are in drawing mode they are constantly asking me for suggestions on what they can draw.......This list by Amy at Pikaland is now on our fridge so they can decide! ( #'s 8,9, 10 to be crossed off!)
It is available as a free download at http://bit.ly/jQFziu
+ I also found this great list over at Wonderstrange.
+ If 100 things is not enough for your child try the 642 things to draw journal - my daughter keeps this by her bed.