What was in that binder? My shakedown sheet! Titled "Health Morale and Welfare Briefing," this sheet details where items that you've brought to BMT need to go on the bed when you dump out your luggage. When all of this stuff is organized and separated, you'll report to the MTIs wandering through the squadron, and they will inspect (and criticize) your belongings.
I'll go ahead and list these items here, since I know the text is a little faded. The valuables go inside of the security drawer in the narrow tray, which is locked at all times. You'll wear the key to this lock around your neck at all times (including when showering) and you are never to have it outside of your clothing. You and your fellow trainees will yell "Key Check!" if you see someone's key out and you need to remind them to put it away. Don't let the MTIs catch you with your key out. Authorized items will go in your security drawer as well, in the back half (or underneath your towel) where you have personal space. Unauthorized items are confiscated. Some may remain in your civilian luggage, others are confiscated and not returned (like food or my unmarked travel bottles of body wash).
Any important paperwork
Personal hygiene items
Stationery (letter writing material)
Motivational reading material (Religious books)
Small photo albums (remove all pictures for inspection)
Weapons, guns, knives
Drugs or drug paraphernalia
Tobacco products to include lighters
Pornographic or obscene material
Books or magazines
Gambling devices (cards, dice)
Over-the-counter or Rx meds
Vitamins or nutritional supplements
Cell phone, cameras, CD/MP3 players
Other electronic devices (remove batteries)
Hope you enjoyed this little treat from BMT!