I'm on the final end of putting together the JUMP VBS curriculum. Here's a few illustrations that are going in the book.
Art notes: I didn't use any pencils on these. I just drew them straight away with an ink pen. Specifically, I used a combination of the following three pens:
Faber-Castell - PITT artist pen - Medium
Uni-Ball - EYE - waterproof/fadeproof - Micro
Bic - Mark It permanent marker - Fine point