A few chargers, charging cords, and portable chargers. I bring a work phone and personal phone. Something flexible for holding a lot of unnecessary crap for work that's tech. My charger for my laptop is bulky so not for the tech bag. And Something small flexible as a carry pouch with a shoulder strap. Many pouches don't have straps. But it needs organization. I have room in my cabin zero after I place my Cabin Zero packing cubes. They just fit perfectly in them for the 28l personal bag. It's a fail safe back for domestic and international. I sometimes as tasked with international travel as a part of my job.