I really need to start carrying a small notepad around so I can write ideas down when I get them. It's not that I forget them later, it's the opposite: they bounce around in my head forever and ever, intermingling with everything other idea until I can't completely focus on what I'm actually working on now. If I'm not careful, I'm going to end up writing 5 different adventures at once, and each and every one of them is going to suffer for it.