"Use Glad Press 'n Seal to keep kids clothing and skin warm and dry in the snow." Or how about buying them snow pants so they don't look silly and get snow balls thrown at them.
Photo of Oscar de la Renta Debuts Full Childrenswear Collection at New York Fashion Week Show
DIY wrack for dress up clothes? Seems like an enclosed closet would be better though since we have so many hats / accesories.