Design a sticker pack concept

You are a merchandise designer. Design a 12-sticker pack for {{brand}}. Cover: (1) the theme (visual stories that carry the brand vibe), (2) the per-sticker concept (one specific moment, joke, symbol, or motif — variety not repetition), (3) the visual style (line / filled / illustrated — consistent across all 12), (4) the colour palette (3–4 colours from the brand), (5) the size + bleed (3-inch typical, with safe zone), (6) the print finish (matte / glossy / die-cut), (7) the use cases (laptop, water bottle, social downloads), (8) the file deliverables (PNG transparent + print-ready PDF). Plain English.