How not to lose a good idea?

It begins, of course, with an idea. For example, I always have a swarm of ideas. Today in the morning I woke up and came up with another great idea (I don’t even remember the chain of thoughts that led to this idea). I don’t know how to implement it technically, but the idea is great! Immediately began to come up with a name for the project. Coming up with a domain is the sweetest moment, right? ;) And here is a very important point. When you don’t know what to approach because the idea is difficult precisely from the technical side of its implementation, it’s important not to forget about it and not to abandon it, but simply in the background of the main everyday tasks to try to find solutions, kicking other knowledgeable people, “reading the Internet” on this topic, etc. From my own experience I know that any idea that comes to your head will sooner or later come to the head of another person, or have already come and he also walks around and does not know “how?”.FMT (future media tycoons) keep their ideas so that they do not "spoil" at all? Maybe at a certain stage of “freezing” some ideas are worth selling? But this is also not easy. Still need to be able to sell. Separate profession. Can I lease? ;) Probably, they won’t return ... Most of the ideas have their own relevance period, but something always prevents you from starting to implement them right now. This is the presence of other projects in development and, consequently, the lack of time for new startups, the lack of funds, the lack of “hands and heads”, but what else is there. Right now, I have two very interesting ideas with a ready-made concept and even purchased domains. Waiting for their time;)