The McCaster family of Plainfield enjoy toasting marshmallows and drinking cocoa around a warm campfire after searching for signs of winter on a Winter Walk Scavenger Hunt during Trailside Nature & Science Center’s annual February Festivities event last year. This year, programs will be offered on Saturday, Feb. 17. Trailside Nature and Science Center is located at 452 New Providence Road and is a service of the Union County Board of County Commissioners.