Start by making one large "bench pillow" form. Change out a new cover for that pillow form for each month, season or holiday. This is the idea behind KimberBell's line of patterns for interchangeable bench pillow projects.
The "Deck the Halls!" bench pillow cover is perfect for December and Christmas!
Instructions for making the pillow form, as well as the "Deck the Halls!" removable pillow cover are included.