The most secure method is to commit your seed to your own memory, this way it can only be stored if you are forced to reveal it under some threat. But this method is also dangerous, because human memory is so unreliable.
I'm thinking this to be the most reliable way of carrying your seed when you are travelling but I realized that I don't have a sharp memory already and I can forget the seeds in an instant or after a few days. It is easy to remember the seed if you are always using it. The question is, how many times in a year are we using our seed? As for me, I cannot remember the last time I made use of my 24-word seed. Truth be told, I cannot even remember a single word from it.
I travel often and I am just carrying my seed with me on a small piece of scratch paper inside my wallet. I think it is not the safest way, though. I'm just a little confident that if my wallet gets lost or taken, nobody would understand what those words are for, at least in this part of the world. But now I think I should at least have them written on 4 different pieces of paper, 6 words per piece.
Actually I undesrtand the idea of yours. I also didn't remembered or even memorized my own seed. We all need to admit rhat it is truly hard to memorized it so we definitely need some othwr ways to save it or to remebered it because it is a very long words. For me, I carry my seeds thrpugh my phone. I used some app like notepad or even some textpad that had some private key or pincode in order to secure it. Writing it on a piece of paper is good but what will happen if that piece of paper lost? You need some back up. Social media is one also of the choices. Like putting it in a chatbox on ypurself in order to easy to access to it. Private Key or Seeds are definitely one of the most important thing in order to access our online wallet. We need to take care of it wisely.
. 
