Lauren Stringer is an American illustrator whose pictures have rich, solid colour and seem to thrust themselves off the pages at you. They will not be ignored. I haven't seen all of her work, but in the books of hers that are in my library (see covers) this is certainly the case. Fold Me a Poem by Kristine O'Connell George combines poems with origami. Our Family Tree by Lisa Westberg Peters allows very young readers to grapple with the concept of evolution and Mud by Mary Lyn Ray just revels in mud!
Lauren Singer's website shows her art, including some fascinating, opening sculptures and alerts me to other books that I am especially keen to follow up on. The last two books which are coming out this year are by Australian authors Wendy Orr and Mem Fox.