James Altucher says he writes down 10 ideas a day to exercise his creative muscle. After years of doing it, he created a site to help others keep track of their ideas. According to him, at notepd.com you can:

> Write your list of 10 ideas.

> Label it "Public" , 'Private' or 'Premium'.

> Public ideas can be searched, shared, commented on, followed, etc.

It has all the functionality of twitter on top of all of this.

> You can use AI to fill out lists of ideas or generate images based on your ideas.

> Premium lists can be sold (like an online course or a 'special report' or a newsletter, etc).

> 'Challenges' can be issued like, 'Give me 10 ideas to help me market my XYZ business.'

Maybe it'll work for you.

EDIT: Changed notepad.com to notepd.com