This is how Liam tells Will he wants to go for a walk: he brings his shoes over. Sometimes he follows Will around the house with his shoes. Sometimes he tries to bring Will's shoes to Will; often the rubber boots, which are nearly as tall as Liam. I'll have to get a picture of that.
Today's walk employed the stroller. Liam enjoyed "helping" put Mollie's toys in the stroller for transport to the park. Will is very patient with him.