Fashion designer kits designed for both girls and boys often aim to provide a gender-neutral approach to creativity in fashion. These kits typically include materials and tools that allow children to drape, tie, and experiment with fabrics while providing unisex patterns that appeal to a wide range of interests. Here are some elements you might find in such kits:

1. Fabric Swatches: Kits may include various fabric swatches in different textures, colors, and patterns to allow children to explore and combine materials creatively.

2. Unisex Patterns: Patterns that aren't explicitly gender-specific, like simple shapes or designs that cater to diverse interests, enabling kids to create garments or accessories that suit their preferences.

3. Draping Materials: Tools or mannequins that allow kids to drape fabrics and experiment with creating different clothing designs or styles.

4. Tying Accessories: Materials such as ribbons, cords, or strings that enable kids to learn various tying techniques to create unique looks.

5. Basic Tools: Scissors, fabric glue, pins, or sewing needles suitable for children's use, allowing them to assemble their designs safely.

These kits focus on fostering creativity, imagination, and basic fashion design skills in children without adhering to traditional gender stereotypes in clothing or design. They encourage exploration and self-expression through fashion and can be a fun way for kids to learn about textiles and design concepts in a gender-neutral environment. When choosing such a kit, consider the child's age, interests, and the level of guidance or supervision they might need based on their familiarity with crafting or design activities.