Hi, there is no such a thing for random idea capturing when they hit us, you do not know where they belong (in which board or direct place on board) and you do not wanna forget them. For example like milanote have done it, you have one tab for quick notes in their mobile app and you can put whatever you want in there (in form of notes (images, links...), but it is not a board), then you come to desktop or tablet and you can drag and drop things from there across all your boards. (It is also a good way for creating a general to-do lists and keep them in mind for as long as you need)
