I think in the best technical way to get through without the agents being able to detect that you have a single satoshi. The most logical would be to memorize the seeds but relying on memory would not leave me 100% at ease. Is there another feasible, safe way?
If it's just a small amount you want to take on your travels, you can create a new seed phrase and write it in a notebook with some random work related shit like it's just notes for work. Use different pages for each of the words mixed into the fake notes in a way that you'll remember them. For example, the first few pages can just be random gibberish, and then the twelfth word on the tenth page is word number one, the eleventh word on page eleven is word two, so on and so forth. Adjust according to your preference.
Also, I've traveled with my ColdCard in my small backpack that airlines let me keep under my feet. It helps that it looks like simple calculator, but you never know if a customs official is going to recognize it or not. I will say, I've never traveled with it outside the US.
I have traveled over-seas with hot wallets on my phone and laptop and have never had issues with that.