Just a quick post showing what I bring with me for quick trips.
My trusty ONA Bowery camera bag normally has ample space for two cameras. In this instance they are my Sony A6000 + Zeiss 32 f1.8 (E Mount) and my beloved Mamiya 6 + Mamiya 50mm. The lead lined film bag slips in the back pouch easily and 10 rolls of 120 fill the two front pockets.
This setup pretty much covers me of any sort of casual shooting and doesn’t bog me down when I’m trying to travel light. I also find that the less equipment I bring, the happier I am!