Dental Floss can be an extremely cheap and useful survival tool to have on hand. Small enough to keep in your pocket or handbag all of the time. Survival tool to always have on you in an emergency.
You can use it for these alternative uses and more:
Sewing - Use the floss like regular thread to mend clothes, outdoor equipment, and backpacks, or to sew on buttons.
As a clothes line - Double up on the string and use it as a clothes line when you are camping
D.I.Y.
fishing rod - Are you stranded in the middle of nowhere and feel
hungry? Tie the dental floss to a stick to make a
fishing rod or to replace a
broken line on your rod.
Fish or animal net - Knot the floss in a criss-cross pattern to make a
net which can be used to scoop fish out of water or catch animals. Hold
the "net" or attach it to a sturdy branch. You can also make a snare
with nylon string.
Climbing plants support - Climbing plants, beans, and other vegetables
often need to be supported. Tie them to a structure with a bit of floss. Great for use with a trellis.
Wind break - Use it to hang a blanket or tarp to make a wind break or temporary shelter.
Rope - Don't have actual rope on hand? Use this dental floss to tie things down or secure things.
Shoelaces - This is an excellent quick-fix for shoe laces in a hurry!
This is just a short list of what you could use
Dental Floss for in an emergency situation. I am sure that you could come up with some other awesome ideas.