As cpotisch, a small backpack always travels with us where ever we are and however out of place it looks. Carry a bridge camera, phone, 13" notebook and all tickets, hotel documents and small book for travel notes with us at all times.
Small enough not to be a bother to others and ourselves, and very easy to carry. In coach always mention to someone we will be out of our seats for a while if it's more than a bathroom visit, others do the same with us.
Never worry about theft as the most of what's important is always with us so we are pretty relaxed. Once on an Amtrak train even asked a convicted criminal (he mentioned it) to keep an eye on our seats for us if there were to be a stop, and we left things on our seats too, but not the backpack. I think almost all fellow passengers want a good journey just like you, but if you feel uneasy about someone trust your instincts.
We can all get unlucky but how rare is that, if we worry about it too much then the joy of travel disappears.
Small enough not to be a bother to others and ourselves, and very easy to carry. In coach always mention to someone we will be out of our seats for a while if it's more than a bathroom visit, others do the same with us.
Never worry about theft as the most of what's important is always with us so we are pretty relaxed. Once on an Amtrak train even asked a convicted criminal (he mentioned it) to keep an eye on our seats for us if there were to be a stop, and we left things on our seats too, but not the backpack. I think almost all fellow passengers want a good journey just like you, but if you feel uneasy about someone trust your instincts.
We can all get unlucky but how rare is that, if we worry about it too much then the joy of travel disappears.