Interesting idea, but I think toilet paper won't cut it. In an emergency situation, you can probably get by without it. Especially if you don't have anything to

Interesting idea, but I think toilet paper won't cut it. In an emergency situation, you can probably get by without it. Especially if you don't have anything to eat. Perhaps batteries? But they would be hazardous to store. Also these days the only things I own that use batteries are alarm clocks. Antibiotics? They wouldn't take up so much space either, but perhaps they decay too quickly?