You can stack at least 3 crates on the back of the bike if you have a bag carrier, 2 otherwise. Then 1 or 2 on the bar between your legs, and 1 on the steering bar, or 2 if you also have a bag carrier there.
Ebike recommended if they’re full, but it’s way doable when bringing them back to the store.
Furniture gets moved by bike here all the time in the Netherlands ? We got this amazing invention called a bakfiets (tub bike) or we just balance it on the back.
Hopefully we in the Netherlands will finally legalize it as well instead of it being a gray area. Although that would require us to give up on beating Belgium’s record of not forming a government.