6. Concrete Spider Halloween Coasters
Add an industrial, modern edge to your Halloween coffee table with custom concrete coasters. Using silicone coaster molds, mix and pour fine-particle crafting concrete. Before the concrete fully cures, press a detailed plastic spider toy or a metal spider charm into the surface to create a deep, crisp debossed impression, then carefully remove it. Once the concrete is fully dry and cured, sand the edges for a smooth finish. To make the design pop, fill the recessed spider impression with metallic gold, silver, or copper paint. Seal the entire coaster with a matte clear coat to protect your surfaces and preserve the gorgeous contrast between the raw, industrial concrete and the shimmering metallic arachnid.