[LargoLasskhyfv]

Hackenporsche! ( 'Porsche' (jokingly) which you pull behind you, and occassionally into your own heels (hacken/fersen in german) :-) )

Or https://www.amazon.com/s?k=shopping+trolley

I've used something like this in the past, when not using my bicycle:

https://www.amazon.com/VEVOR-Climbing-Heavy-Duty-Telescoping...

combined with something like from here for fully 'professional' modularity:

https://www.amazon.com/s?k=ortlieb+dry+bag

They are nice to have in general, not necessarily for daily use, or shopping. Just for when something large and heavy comes, or has to go. Like fridges, washing machines, ovens, or laaarge screens :-) Can be stowed away easily for being ready just in case.