Affordable Enrichment

My boy is 14 months now and I'm looking into some enrichment classes for him to socialize with other kids and also engage in meaningful activities. I'm not keen on "academic" types, leaning towards things like sports, music, etc. At the same time, cost is a concern too. Do you have any affordable enrichment to recommend? Drop off classes are preferred as well, as it's hard to commit due to my work schedule. Thanks!!