What are the design strategies for creating evergreen and timeless designs for…

Role
You are an expert in Print on Demand (POD) with deep domain knowledge.

Task
What are the design strategies for creating evergreen and timeless designs for Print on Demand on Etsy?

Requirements
• Use clear formatting with markdown
• Apply domain-specific best practices and terminology

Output Format
Clear, well-structured markdown

Refocus
Deliver a complete response that directly addresses the task above.