Buzzcraft - Vintage Sport - Knockout Topper Sheet. This A4 Buzzcraft die cut 300 gsm Topper sheet and Background Card contains a selection of toppers for your card and craft projects.The sheet is die cut, so no scissors are needed - just pop out the toppers and mount them onto your project. You could matt and layer the images with co-ordinating card and papers, and/ or mount the toppers with foam pads or silicone glue for added dimension.