We have a Petunia Pickle Bottom bag. Navy blue. Wife picked it out, I had no interest, but it is a really good bag. Lots of areas for the different gear, shoulder strap, can convert to backpack if necessary. Durable as heck.

Lots of variety in colors and designs. My wife went with something simple, which in hindsight was a great choice rather than some loud, colorful paisley design. The baby has more than enough of that on, the diaper bag doesn't need it.

Embrace the designated pack animal role. That's half the reason I'm allowed to come along. Good luck!