This is what I have in the bag today.  

Bag (leather vintage bag I picked up in London a while back, 35 years old!)

Flashlights (I typically ride with more than one) 

Film (I typically will have one film camera in the bag : fuji provia is the usual )

TLR Camera (Not a bad Camera)

Minolta SRT101 (actually a good camera, the lens is pretty fast at 1.4)

Polaroid 440 & Fuji Pack film (my absolute favorite camera)

Iphone (ofcourse, need the map to find my way thru LA)

Amazon Kindle Fire (this is now my new log book, rooting it made a big difference)

**I usually ride with two or three cameras, I’ll ditch two cameras if I need to bring a laptop.  The necessities: $10 for snacks & drinks, compact tools for the bike that includes a tire repair kit, lip balm, sunblock & bottled water.