A ball burnisher is a tool commonly used in woodworking, metalworking, and other crafts. It typically consists of a handle with a rounded or spherical metal tip. It's used for smoothing out surfaces, shaping materials, and burnishing metal to give it a polished finish.
As for a plastic filling kit, this could refer to a kit used for repairing or filling in plastic materials. These kits usually contain various materials like epoxy resin, plastic filler compounds, sandpaper, and sometimes even coloring agents to match the color of the plastic being repaired. They're handy for fixing cracks, chips, or holes in plastic items like car bumpers, toys, or household appliances.