By LAURIE ERICKSON | Ontario librarian Preschoolers are invited to join us for playgroups at 10 a.m. Wednesdays. There will be stories, activities, crafts and a snack. We are using an alphabet theme, and this week the theme is the letter “S.” ♦ ♦ ♦ An all-you-can-eat chili and soup supper will be at the Ontario Community…