There are many names for these boxes including Grub Box and Patrol Box. The important part is these are usually wood or plastic boxes that are used to store all of your kitchen gear in. Thes boxes can be complicated and well designed, or just a simple rubber maid box.
A big factor I need to point out... make sure the box is of a size and weight that the Scouts can manage it.
One of InsaneScouter sponsors, Blue Sky Kitchen makes some really cool grub boxes. Check them out at http://www.blueskykitchen.com/
Rather then trying to tell you about them, I figured just give you links to a bunch of examples and let you decided what works best for you.
http://www.troop42.com/patrolboxes.htm
http://www.troop679.org/patrol_box_plans.html
http://web.archive.org/web/20060509094639/http://users.rcn.com/andrewsl/images/chowbox1.gif
http://web.archive.org/web/20060509094639/http://users.rcn.com/andrewsl/images/chowbox1.gif
http://web.archive.org/web/20060509094639/http://users.rcn.com/andrewsl/images/chowbox1.gif
http://369.columbus.oh.us/scouting.d/patrol.box.html
http://troop168.net/PDF/ptrlbx1.pdf
http://www.troop184.org.uk/patrol_box.htm
http://www.troop414.com/quartermaster/patrol-box.htm
http://www.troop325.com/resources/PatrolBoxPlans.pdf
Please post your comments about grub boxes in the comments below.