When traveling, carrying a camera around safely is anything but easy. From a logistical standpoint, consider choosing the smallest camera that meets your needs. In addition to saving space and reducing weight, smaller cameras are typically less expensive.
To protect your camera during travel, choose a camera case of an appropriate size for your camera. Cases that are too large allow the camera to jostle around inside, potentially exposing it to damage. In the same vein, be sure to secure all accessories inside your camera bag by taping them down and filling in empty space with soft items, such as clothing.
When deciding which equipment to bring, it is always best to think small. Only take your professional-grade tripod and lens collection if you are absolutely sure you will need them. Further, keep your camera in your carry-on bag whenever possible, as you cannot always control how your checked baggage is handled.