Sketch Card Mania Tip: 

When brainstorming your logo, to start brainstorm as many ideas as you can about things you like and that you feel identify you: hobbies, favorite movies, music, comic books, nicknames, astrological signs, etc. Start a list and begin mixing and matching to create different ideas. Before you know it, you have a few logo concepts for your sketch card!

This card back by Luis Diaz is a good example of a strong logo!