I have a Madsen Bucket Bike, kinda like this but the previous model and not electrified:

My kids are too big for it now (sort of, I can still jam them both in if it's an emergency) but they used to love riding in it. I keep thinking I'll sell it but for big grocery runs or errands in the neighborhood where I need more tools than I can carry on a pannier, I still get lots and lots of use out of it.

I find the hard sides and permanent fixture to be really good for hauling lots of stuff, vs soft removable bags that maybe I don't remember to bring with me or that squash around and make it harder to load. The downside is, it's a lot to get used to and the fact that the bike itself empty is like 100 pounds makes it a no-go for long trips.