Most of my favorite books right now are pre-school/kindergarten books. Here are some:
Chicka Chicka Boom Boom
The Napping House
The Very Hungry Caterpillar
Brown Bear, Brown Bear, what do you See?
Harold and the Purple Crayon
Blueberries for Sal
Of course, I have lots more to share. This is what I have time to add today. Hope you find one or two you enjoy.