I just got an ebags Mother Lode Rolling Travel Backpack. The seems to be out of stock everywhere right now, but I'm guessing they'll be back? ...sorry guys, I think I got the last one. This bag is made for those of us who prefer 1 and 2 day trips. It allows me to pack an overnight kit in case I get stuck out on a day turn, but also has plenty of room to act as a flight kit. It's so nice only carrying one bag, plus it allows me to have the FO's use the cockpit storage. I haven't tried it yet, but I'm guessing I could easily pack for a 3 day as well (in the summer anyway). It fits upright beside me on the 717, but next time I'm going to try to lay it down or put it in the area to the back left of me. Worst case I set it to my back left on the 717, where it easily fits.