Based on your query, here's a vibrant color palette with 12 distinct colors, each representing a specific activity and complementing each other for a visually distinctive look:

1. Color Name: Electric Blue
   Hex Code: 
                            
                            #3DDCFF
                        
   Palette Description: Represents planning and gives a futuristic and energetic vibe.

2. Color Name: Neon Green
   Hex Code: 
                            
                            #39FF14
                        
   Palette Description: Represents working out and exudes a fresh and invigorating feel.

3. Color Name: Cherry Red
   Hex Code: 
                            
                            #FF0040
                        
   Palette Description: Represents working on music and brings a passionate and intense energy.

4. Color Name: Goldenrod
   Hex Code: 
                            
                            #FFD700
                        
   Palette Description: Represents consuming information through books or videos and radiates a warm and enlightening aura.

5. Color Name: Tangerine
   Hex Code: 
                            
                            #FFA500
                        
   Palette Description: Represents eating and adds a lively and appetizing touch.

6. Color Name: Indigo
   Hex Code: 
                            
                            #4B0082
                        
   Palette Description: Represents tasks and conveys a sense of purposeful and deep determination.

7. Color Name: Lime Green
   Hex Code: 
                            
                            #32CD32
                        
   Palette Description: Represents coding and offers a vibrant and tech-savvy outlook.

8. Color Name: Magenta
   Hex Code: 
                            
                            #FF00FF
                        
   Palette Description: Represents writing essays and emanates a creative and expressive essence.

9. Color Name: Bright Marigold
   Hex Code: 
                            
                            #FFAA1D
                        
   Palette Description: Represents school and exudes a cheerful and academic spirit.

10. Color Name: Vivid Violet
    Hex Code: 
                            
                            #9F00FF
                        
    Palette Description: Represents general activities and brings a lively and dynamic presence.

11. Color Name: Coral
    Hex Code: 
                            
                            #FF7F50
                        
    Palette Description: Represents notes and adds a vibrant and organized touch.

12. Color Name: Electric Purple
    Hex Code: 
                            
                            #BF00FF
                        
    Palette Description: Represents details and introduces a vibrant and intricate feel.

This vibrant color palette showcases a vivid view of life and ensures that each activity is visually distinctive while complementing each other, allowing for seamless stacking and a harmonious overall look.