In case anyone isn't aware, the trick is to create a group with any contact and then remove them. Mine is pinned to the top and named Notes - and unfortunately is the most robust way to share images and notes from desktop to Android (I tried Pusbullet and Join too)
You can try Alt-c for text and it works good, but for images I also found whatsapp as the quickest way
Never thought about this but man is it a slick solution. Installation on Windows was super easy too. Thank you!
Another option that’s cleaner imo is to literally start a chat with yourself as OP mentioned. Simply navigate to this URL on your phone https://api.whatsapp.com/send?phone=$1
Replace $1 with your phone number including country code but without a + sign.
People sending themselves emails or whatsapp messages was certainly one motivation for the interface. I personally also wanted a) reminders associated with notes, and b) simple lists so I don't have to use separate apps for different types of notes.