When I bought my folding bike I knew it had to have some handlebar luggage. In the end, I settled for a simple, folding basket.
What’s unusual about the Brompton design is that the basket doesn’t track the movement of the handlebars and front wheel — rather it’s always aligned with the frame and rear wheel. In other words, the basket always faces straight ahead even when you turn the handlebars side-to-side.
This is disorienting at first, but something you quickly become used to.
In the images above and below, the basket carries a full shopping bag of laundry on the way to the cleaners.