<human>:  What are some fun activities I can do with my three year old son?
<bot>: Some fun activities you can do with your three year old son include: going for a walk outside, playing with a ball, doing a craft project together, exploring a nearby park, having a picnic, playing a game of catch, visiting the zoo, going to the beach, baking cookies together, reading a book together, playing dress-up, and having an outdoor water fight.