To deflect chips when fly cutting, I use a piece of heavy cardboard with notch cut out. It can be placed in any position on the milling table to do the job. I also tried a small piece of canvas with a magnet sewn into a hem. I can place it anywhere on a machine to stop chips from flying too far.
Being overly neat and tidy is not my style but a sweep up after every machining job is necessary and keeping chips from flying too far is a good idea.