Ideas are free. They cost absolutely nothing to create and mostly time to share with other or to think through to improve.
And because they require little in the way of input, you can generate a lot of them with a little bit of effort.
And despite your ego telling you otherwise, most of those ideas are not worth putting in any real effort. Sorry.
The key to crafting a good idea is not in crafting a good idea, but in sifting out the bad ideas a quickly as possible to allow you more time and effort to improve upon the good ideas. If you want to keep a few bad ideas in the back of your head in hopes that you can transform one into workable ideas, great. Just don’t let them become projects that suck the resources from the ideas that are more likely to work out.