2D 70s Groovy 16in1 Icon Grids

Generate a nostalgic 2D graphic sheet with 16 different 1970s groovy icons based on any theme. Built for Google Gemini, this 1-click prompt automatically selects 16 iconic objects and pairs them with a vibrant vintage retro color palette. It creates a uniform handcrafted hippie pop art style, featuring thick rounded black outlines and solid matte colors with zero digital gradients. All elements are aligned in a 4x4 grid on a shadowless stark white background.