bug-out bag
n.— «Secondly you need what I call a “bug-out bag,” also known as a go kit, go bag, 72-hour kit, run bag and other names, is a container which keeps essential survival items readily available in case of an emergency.» —“Major Problems Of Surviving Peak Oil” by Norman Countercurrents.org Oct. 18, 2006. (source: Double-Tongued Dictionary)
Further reading
The cardboard cylinder left after the last sheet of toilet, tissue, or wrapping paper comes off the roll has inspired families to make up a lot of names for the tube or the sounds you can make with it. These include oh-ah, oh-ah, drit-drit, dah-dah...