stay & play playgroup on Wednesdays 10am-12pm stay & play playgroup at Ethos Early Learning Center in South Boston. stay & play playgroup at Ethos Early Learning Center in South Boston. In our playgroups at Ethos Learning Center, kids using water color paint stay & play playgroup at Ethos Early Learning Center in South Boston. stay & play playgroup at Ethos Early Learning Center in South Boston. stay & play playgroup at Ethos Early Learning Center in South Boston. stay & play playgroup at Ethos Early Learning Center in South Boston. In our playgroups at Ethos Learning Center, kids playing with educational toys