简约卡通3D渲染生日派对帽蛋糕气球礼盒庆祝图标插画

3D rendered cartoon style icon set, nine birthday themed items arranged in 3×3 grid layout, including striped party hat, blue balloon, cupcake with yellow frosting, single-layer cake with candle, cupcake with blue sugar beads, three gift boxes in different color combinations (blue-yellow, white-orange, green-blue), pure white background with subtle gradient, soft lighting effect, fresh and bright color scheme (light blue, light yellow, light green and white with orange and yellow accents), rounded edges, cute and playful visual effect, festive joyful atmosphere