For us olds farts, a "life hack" used to be known as a "helpful hint." Since most of these have to do with the kitchen and foods I put it the galley forum.
http://www.artfido.com/blog/50-life-...fy-your-world/
I don't think the one about the onion works. If you don't want to cry cutting an onion then you slice it in the right direction.
The rubber band on the paint bucket is clever.
You have your choice of 20 ways to organize cables. I still can't figure out how ninjas fold their t shirts.
For what it's worth...