What about checking the local rec departments? This is the off season for those sports, but usually that is where you'll find the "tiny tot" type of classes. Our local rec department offers individual sports and "tot Olympics", which is a different sport each week. They're fun classes that are more focused on developing motor skills than competition.
Wife to DH, mama to DD (7) , DS born 3/12 , and have had five early losses. I have Stiff Person Syndrome and my other car is a candy apple red Rascal. Feel free to ask me about it.