Tickling is one of the best ways to make baby laugh. Any fun interaction is a good starting point, whether it’s tickling or goofing around. Be natural and take cues from your baby to see if yours is a fan of tickling.
According to a baby laughter scientist (yes, that’s a thing!), the secret to making babies laugh is simple. All your little one needs is company. More than anything else, being around people is what makes babies giggle (source).