Note down ideas immediately. Store them in the cloud.

Ideas sometimes come when you think, "Okay, let's think!" but they also come to you at casual, unexpected moments.
And,
it is often the case that

the ideas that pop up suddenly disappear without a trace just as quickly.Leaving behind only the wreckage of "I thought of something good" (lol).Even if you search your memory thinking, "Wait! I definitely thought of something good!", what has disappeared will not come back. (Maybe that's just me...)

Store the ideas that come to you in a cloud service.

I used to carry a notepad and pen around with me.
But it's convenient now; as long as you carry your smartphone, you can take notes immediately.

For ideas that aren't very well-defined,
I type them into a private group on LINE. Or, I use voice input.
I review them quickly at the end of the day, and since the time of the note is displayed, it makes it easier to look back later and think, "Ah, that was then."

For well-defined ideas, I put them into a cloud service note app.
Ideas that are ready to use as they are.
Since I use an iPhone, I currently store them in iCloud.
I can draw simple sketches directly on my smartphone. While paper and pen are easier for serious sketching, when you have an idea, immediacy is key!
It is more convenient to write even a partial note on your smartphone that you can remember later.
Since searchability is also high, if you write down hints in words, it is easy to look back on them later.

Both LINE and iCloud are synced, so
you can see them immediately on your PC or iPad, and you can use them as they are when you do summary work on your PC.

Ideas won't come without input.

Ideas are born based on:
・The person's stored memories
・External information
・Stimulation gained from active exchange of opinions.
Therefore, to generate ideas, it is important to collect information that serves as a foundation.

I also store information that serves as hints for inspiration in a cloud service.

I look at news sites or read columns during travel time or small gaps in my schedule. At those times,
"Things that could be hints, clues, or leads"
"Things that I'm vaguely interested in"
"Things that I feel have some potential" are actively stored.

I save events and such to the cloud.
I take notes along with photos about what caught my interest and why.

Once you have accumulated a lot of ideas...
I organize, categorize, and summarize them to increase the clarity of the ideas.