Don't overstuff your container. Your cookies may be damaged. Likewise, don't under-pack your container. The cookies should fit snugly. If you have too much space, crumple up a bit of tissue paper to fill the holes.
Pack cookies in a sturdy tin or airtight container.
On the bottom of the container place a piece of bubble wrap, then line the container with parchment paper or cellophane, leaving enough to tuck over the top once the container is fully packed. Place one layer of cookies in the container. Cover with parchment paper. Arrange another layer of cookies, followed with more parchment paper, and continue this layering until the container is full. Tuck the cellophane or parchment paper over the top, then place another piece of bubble wrap on top, and seal your container.