Prompt:

Design a cohesive set of 8 hand-drawn icons: silver bar with a small gold stripe on top, circular arrow around a box symbolizing returns, single crystal with a leaf symbolizing ethical production, simple truck with a small 'EU' label, calendar with a curved arrow around it, small mountain with a pattern symbolizing craft, two hands exchanging a coin, and shield with a checkmark. Use a sketchy, artistic line style with slight imperfections. Ensure all icons share the same style and line thickness, and are easily recognizable. Each icon should be in a square format with a resolution of 1024x1024 pixels. --v 6.1

设计一套统一的8个手绘图标：一根顶部有小金条的银条，围绕一个箱子的循环箭头象征退货，单个水晶与一片叶子象征道德生产，简单的卡车上有一个小'EU'标签，日历周围有一个弯曲的箭头，小山上有一个象征工艺的图案，两只手在交换一枚硬币，以及带有勾的盾牌。使用线条风格略显不完美的草图艺术风格。确保所有图标共享相同的风格和线条厚度，并且易于识别。每个图标应为1024x1024像素的正方形格式。