I bought the official switch backpack. I bring the thing with me everywhere I go and I'm really happy with it. Lots of space for everything and the price is about the same as most regular backpacks.
I am using a messenger bag. It has a lot of different compartments for each thing, dock, console, cords and remote. It has nowhere to carry games though but to counter that, I have a carrying case that has slots that carry games.
I had the square case for 39.99 but now I bought Switch carry bag .I work as a night auditor and I carry this thing with me all the time ..even has a zipper on back ..it's normally 39.99 also but on sale for 31.99 at Amazon and I saw at Gamestop they are offering 20%off switch assorries and it's the same price right now with discount