Book Stacks
3 stack of books different by height. No transparency used. Basic (linear) gradients.
Book Pile
Illustration of a cartoon book pile in 3 different versions. No transparency used. Basic (linear) gradients.
Blackboard
Cartoon blackboard in 2 versions. No transparency used. Basic (linear) gradients.
Back to School
Cartoon banner in two versions differing by proportions. You can extend the white part of the clouds downwards as much as you need.