I saw that suggestion for Choco’s. I am doubtful that Cocoa Krispies (which is rice based) is a suitable replacement.Choco’s is wheat based.
Wheat flour, cocoa powder (28%) (sugar, cocoa powder), sugar, glucose syrup, extract of barley malt, salt, calcium carbonate, cinnamon flavor, vitamins (PP, B6, B2, B1, B9, D, B12), iron.
Cocoa Puffs might be a better fake, but as they are spheres, the texture is likely different.