The upside to this is that you always have EVERYTHING! Spare bib, got it! Diaper, got it! Clean clothes, wipes, hand sanitizer, check, check, check! Spark plugs? They must be in here somewhere...
The downside is, there is no room for knitting! All these flipping bags, and by the time I'm loaded down and ready to head out the door I give my knitting bag a longing look and cast my eyes down, not able to tell it that it can't come too. But, I mean, really, at that point I just see it as one more thing to carry out the door instead of the bag of creative opportunity it really is. Even if I do bring it with me, I end up having so much parenting to do that knitting isn't even on the radar.
I know this because everyday I bring my knitting bag downstairs and don't work on it. Then in the evening I bring it upstairs and don't work on it. Thankfully, having it close by has a calming effect all on its own. Maybe one day soon i will be able to sort this out, but I doubt it.