I'm just getting back to traveling and teaching after 8 years, and so much has changed in that time... I used to board planes both across the USA, Canada and Mexico and sometimes through Europe, with a beautiful travel tiffan thermos made in Japan by, I think, Nissan. It has four internal food containers that stack. I usually carried baked tofu, steamed greens, 9 Grain Fano bread toasted. I also carried a small stainless steel thermos for tea. I'm not sure if these will go through tsa now. Have checked the tsa website but nothing solid. Of course, as a turban wearing female caucasian Sikh, we are highly profiled anyway. Any ideas or comments? Thanks, Hari Simran Kaur Khalsa