Take the "Side Effect" and marry it with the large cafe bag.
Then you could separate the "bags" depending on what activities are planned for the day.
You could build up to a backpack with a bunch of different bags.
Right now I am not using the Swift bag to carry knitting. It carries my lunch bag and stainless steel water bottle. Depending on weather conditions, the umbrella. I have also attached a strap from another item to the eye hooks at each end of the bag. The stap keeps on my shoulder a lot better than the handles.
Then I use the handles when appropriate.
I basically have "transformed' it into a utility tote.
Like Sly said, "different strokes for different folks".