It can be very helpful to have a place to capture miscellaneous notes, thoughts, and ideas. If you have a dedicated space set aside for these types of ideas, you can easily capture them in the moment and also ensure you’ll be able to find them and action them later as needed.
I’d recommend creating a private notes project in Asana for this. You can also quickly capture these ideas in your My Tasks list on the Asana mobile app, and then move them into your notes project or action them when you get back to your desk.