Walking BACK to the car is hardly sensible. After a bus ride, the car might be 1-2 miles away, etc etc etc. The back-pack, or whatever you carry, is going with you anyway.....you might as well put stuff in it. How much does an eye-cup weigh......1/1000 of an ounce.? There is nothing to "juggle", it is all in compartments in the pack. No need for anybody to be stupid...Nobody is suggesting that you use Everything you carry Every time. I was just wondering what some people use. The OP was not a Trumponian ploy to divide an conquer.