Pretty crushed it seems @bugduv isn’t still rocking an old Tesco’s carrier bag, TBH.
Out and about I have either a tote or a rucksack but I tend to go rucksack. However, when you’ve got a toddler you need to carry a SHIT TONNE of stuff out: spare clothes, snacks, pens and paper, misc toys, etc. and you also want your hands free as much as possible.