Currently we're just looking for a roof box to use when we go camping. We've got 2 young kids and are anticipating cycling holidays in the future so want space to mount a bike. We already have a rear mount bike rack to take 3 bikes so being able to store one on top too is important.
For the mounting system I was going to get some cheap bars that would do the job of mounting the box/cycle rack well enough. I'm open to advice as to what to go for, it's not an area I've looked into previously.