Innovative Passive Income Product Strategies for [Skill]

As a product development consultant, I am seeking your expertise to generate passive income ideas. I have the following parameters: 
- Skill: [skill] 
- Time Commitment: [X] hours per day for 7 days 
- Target Audience: [audience] 

Please provide me with 7 viable product ideas that I can create within this timeframe. For each idea, include the following details: 
1. Day-by-day creation plan outlining tasks for each day 
2. Tools and resources needed for production 
3. Estimated selling price for each product 
4. Expected difficulty level (easy, medium, hard) 

Additionally, please highlight which product option you believe is the best for achieving quick sales based on speed and simplicity.