Your toddler probably loves group activities.
They’re important for parents, too, as you can make new friends and socialize with someone who speaks in complete sentences and gets you out of the house for a while.
Lots of toddlers like a story time at the local library or bookstore. These are usually free and often involve a story read to the toddlers, with lots of exciting voices and maybe puppets or actors, some songs and games, and maybe a craft project.
You don’t have to take a class to get involved in a music group. You probably have a parent friend with a rudimentary knowledge of music and some spare instruments. Get your toddlers together and let them make some noise, I mean, music.
Tumbling or movement classes provide great sensory input and great fun for your little one. A local gym might have a toddler class, or just go to the playground and swing, run and jump.
Older toddlers might like some kind of art or craft group, with projects fitting for gross and fine motor skills. They can paint large murals, do handprint or footprint crafts, or paint splatter projects. They might also like craft dough and finger paints.
A just play group is great, too. Let the toddlers decide what they’re doing and enjoy watching them interact.