Write down in iOS Reminder, then receive it in your computer's browser when you go back home.
I have a iOS device, but I don't have data with it. Always, when I'm alone, I will come up some idea with what I see and what I hear. Usually, I will use the iOS Note. Last night, the IFTTT reminded me of that maybe I can work with it. The Pushbullet cannot work offline, so I match iOS Reminder with Pushbullet. When I go back home and open my computer, the notification of Pushbullet will jump out in the Chrome Notification. It's so convenient. I will no longer forget what was in my mind. ( BTW, the to-do apps like Todoist cannot jump out a notification. I tried. And I know, to solve my problem is very easy-a data plan! )