Selecting carnival supplies requires a balance between visual impact, safety, and durability. For large events, prioritize flame-retardant materials (meeting NFPA 701 or EN 13501-1 standards) to ensure public safety. For wearable items like costumes or masks, verify skin-friendly certifications such as OEKO-TEX or REACH to avoid allergic reactions. If purchasing mechanical carnival games or inflatables, ensure they carry CE, ASTM, or UL certifications for structural integrity and electrical safety.