Or a bike trailer if you need to carry more. Some can detach and be used as a hand cart too, so perfect for grocery shopping!

I have a double kids trailer from Thule. Even with kids it has a ton of storage. It detaches easily and has 4 wheels. The shocks are also adjustable to make it easier on the kids with heavy loads.

Yeah this might be a good idea. Haven't looked into it yet but I might end up doing something like this. A sibling comment mentions a trailer and I like that idea as well

I used to do that, trying to load anything reasonable on a bike makes it handle like serious crap. It jackknifes and good brakes become very important.

A trailer would probably be a lot better.