The Rhombus of Recipes is a floating parallelogram that appears in the "Elmo the Musical" segment, "Guacamole the Musical."

When The Queen of Nacho Picchu demands a dip for her chip, Velvet recommends the shape to Elmo (having come up with the idea for him). By singing "We want guac," the shape appears and provides Elmo with the ingredients for his guacamole recipe.