We always tend to think of recording our thoughts on a thing, and carry those things around with us. But many thoughts are kept very will with another person.
Rather than write down that idea, call a friend and explain it to them. The conversation will help root the idea in your memeory, and if it’s an idea that will ultimately have to win others over, having your friend be a sounding board will provide valuable feedback.
So rather than reaching for that leather journal and foutain pen, or that digital voice recorder, why not reach for your phone?