Having fun and being silly is a great activity to promote joint attention in babies. Have fun making silly faces, making funny noises with your mouth and/or wearing funny clothes. All of the above will capture a child’s interest, and attention and they will want to include you in their play. Using funny voices, increase/decrease your voice, and singing will also help capture your little one’s attention. They will want to engage with you, which is important for later social skills with others.