So I have a lot of ideas. Some of them just warrant one card in Asana, like this one:
[ My kids are older now, so that's not an issue ]
Some ideas, however, need a lot more cards as I flesh out the idea, and so I put them into a separate board (like a kanban board) in Asana.
And Asana only shows the first few boards down the left-hand side. You have to click "show more" to see others, and even then it only adds a few more. So you click it again...
So I wrote a bookmarklet to save in my browser toolbar, and I click that once. It then clicks clicking "show more" until all the projects are showing.
And here are some instructions on how to create the bookmarklet itself.