Mac Gyver Said : "Give me your hacks I'll give you mines"

Was looking at a survival hack video, and thought it would be nice to share some great hacks (survival hacks, life hacks etc) between us.
I know there are some weapons lovers on here, and for sure there are some "survival to a zombie attack" people.




here the video I was looking at (the weapon made with plastique bottle top and ballon is awesome, and the guy accent is priceless ; and there are a lil bunch of great tips in it) :





So let's share and discuss. We don't want to let our beloved Squadts go to silly zomies in case of attack. We must be ready !  

Unleash your Inner Mac Gyver, and give us your good tips