What types of natural disasters might you encounter in the area that you are living? Do you have a plan of action in the event that one occurs? Do you have the supplies that you might need at home and in your vehicle?
There a number of online resources that can provide you with helpful checklists such as this one: http://www.ready.gov/sites/default/files/documents/files/checklist_1.pdf
Make multiple copies of the checklist(s) that you use. Distribute them to family members, roommates, coworkers, etc.
Keep a laminated copy of the checklist in the container, backpack, and bags that hold these items. This will remind you of the contents during a stressful situation and save you precious time looking for what you need.
Refer to the checklist at regular intervals to be sure that adequate supplies are on hand and that items are in good condition and have not expired.