Brad Setting Tool by We R Memory Keepers
Prior to buying this tool, I was poking holes in paper with a nail or a needle. That was a lot of work! This tool is very sharp and it makes it easy to punch through several pieces of card stock all at once. I use a strong piece of foam when poking holes so that I don't ruin my table. The other side of the tool is for setting brads. To be honest, I hardly ever use it. I find it easier to just spread the brads apart with my fingers.

Link to Amazon where you can purchase a brad setter or more of my favorite things.