What do you want to keep with you all the time? I had an overpriced flight bag but it was annoying and bulky. It was like the LA police gear just posted.

But I fit everything I need into a small Burton backpack. Mine is similar to this but black/grey camo print. Think I bought it for $20. You can find them cheaper than amazon sometimes, mine was clearance at REI.

https://www.amazon.com/Burton-Prospect-Backpack-Balsam-Size/dp/B0793394HY/

Fits couple headsets, iPad, Flashlight, chargers, sunglasses, ... Logbook. Having a small backpack is pretty convenient.