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
