SIMPLE arts/crafts for very young pre-schoolers?

Hi! I work at a preschool where I care mostly for a cl of 1-year-olds and occasionally the two-year-old cl. I feel that oftentimes children this young are not exposed to enough artistic or crafty activities simply because they are "too young," as many crafts (and even colouring) can sometimes be too complicated. Still, I feel there must be some activities that are simple and engaging enough for these young toddlers to do - something that encourages creativity but is not over their head or so complicated that the adult does all the work. Does anyone have any ideas or recommendations?? Thank you so much!!