Here's a video one, called the Copenhagen - which concertinas open to reveal space for quite a lot - toiletries, a change of clothes, a slot for tablet, papers and a 16inch laptop.
The key here is that Verbatim promises this bag, and the others in the range, complies with "all major airlines sizes for carryon luggage."
Overnight bags that include provision for a notebook aren't quite so commonplace, but they are not that hard to find. Features to look for include a compartment with straps to keep a clean shirt or blouse flat, and enough depth for a sponge/makeup bag.
At this point things can start to get on the heavy side, so consider a backpack design or a bag fitted with wheels and a telescopic handle. Either design reduces the risk of discomfort or injury from a lop-sided load on your body.
We have not had an opportunity to try any of them out, but Verbatim's range delivers some or all of these features.
Prices range from the $59.95 London (a traditional notebook shoulder bag) to the $179.95 Frankfurt and Copenhagen overnight roller bags.
Whatever brand of luggage you favour, please don't be That Guy (of either sex) who tries to take a maximum-sized case, a computer bag and a briefcase or large handbag into the economy cabin plane. Have some respect for your fellow passengers: either check your largest bag or travel lighter.