How not to lose a good idea?

It begins, of course, with an idea. For example, I constantly have a whole swarm of ideas. Today I woke up in the morning and another great idea came to my mind (I don’t even remember the chain of thoughts that led to this idea). How to implement technically I do not know, but the idea is excellent! Immediately began to come up with a name for the project. Coming up a domain - the sweetest moments, right? ;) And here is a very important point. When you do not know where to go because the idea is complicated precisely from the technical side of its implementation, it is important not to forget about it and not to abandon it, but simply in the background to try to find solutions to the main problems by kicking other knowledgeable people this topic, etc. I know from my own experience - any idea that came to your mind will sooner or later come to your head to another person, or has already come, and he also still walks and does not know “how?”. I wonder how other 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 very difficult. Still need to be able to sell. Separate profession. Can I lease? ;) Probably, they will not return ... Most of the ideas have their own relevance, and to start embodying them right now is always something that prevents them. This is the presence of other projects in development and, accordingly, the lack of time for new start-ups, the lack of funds, the lack of “hands and heads”, and what else. Right now I have two more very interesting ideas with a ready-made concept and even purchased domains. Waiting for their time;)