Oct 23, - These seven DIY Halloween costumes for geeks are the perfect Get an instant with our selection of Super Mario Bros Costumes! Here are some easy cocktail, food, costume, activity, and decoration ideas to get you started! Make easy DIY Mario Brothers costumes using these instructions for cute matching costumes. Little to no sewing skills needed. Easy DIY Halloween Costumes for Kids, From Care Bears to Ninja Turtles. Babies, toddlers, tweens, and everyone in between: There's something for every kid in. Great ideas here for a Super Mario costume and Luigi costumes, Yoshi Nintendo Super Mario Brothers Luigi Classic Boys Costume, Medium/ These homemade Super Mario and Luigi costumes look fantastic and here is how to make.