Here are the fixed lens 35mm film cameras that I use in one-lens/one-camera situations:
Minolta Hi-Matic 9 rangefinder with 45mm f/1.7
Canon Canonet QL17 G-III rangefinder with 40mm f/1.7
Canon Sure Shot compact with 38mm f/2.8
Nikon L35 AF #2 with 35mm f/2.8
GoPhoto Aqua Pix Underwater Camera with 30mm lens
Mazda/Vivitar P&S camera with 27mm lens
Minolta Hi-Matic 9 rangefinder with 45mm f/1.7
Canon Canonet QL17 G-III rangefinder with 40mm f/1.7
Canon Sure Shot compact with 38mm f/2.8
Nikon L35 AF #2 with 35mm f/2.8
GoPhoto Aqua Pix Underwater Camera with 30mm lens
Mazda/Vivitar P&S camera with 27mm lens