I think Józef Wilkoń is one of the most famous children illustrators in Poland nowadays. Here are some of his illustrations - it was hard to choose a few because he has illustrated more than 100 books. Artist himself: He also creates adorable sculptures:
A Black Cat relaxes on a pile of books, lazily staring at a flickering candle. From the talented Lisa Parker, this beautifully soft cushion is a comfortable addition to any living room or bedroom. The Witching Hour Cushion by Lisa Parker.