KimberBell - Whimsy Winter Bench Pillow Pattern Whimsy Winter Bench Pillow. Interchangeable Bench Pillow Covers. Start by making one large bench pillow form. Then change out a new cover for that pillow form for each season or holiday! This is the idea behind a new line of patterns for interchangeable bench pillow projects. First in the series, the Whimsy Winter Bench Pillow is perfect for January! Great to use for a Winter project. Instructions for making the pillow form, as well as the Whimsy Winter Cover are included. Finished size: Approximately 16 inches x 38 inches.