The very best startup ideas tend to have three things in common: they're something the founders themselves want, that they themselves can build, and that few others realize are worth doing.
It's easy. Make yourself perfect and then just paint naturally.
When something is described as a toy, that means it has everything an idea needs except being important.
Because it means both that there's demand and that none of the existing solutions are good enough. A startup can't hope to enter a market that's obviously big and yet in which they have no competitors.
Live in the future and build what seems interesting. Strange as it sounds, that's the real recipe.