Donovan Harshbarger

Description: Forty-four pairs of eyes from different generations and different nations each have their own stories. Yet we strive for unity, because that which makes us different need not make us enemies.

Description: When workplaces and college campuses are rife with harassment and worse, it's time for men of character to take a stand for what is right. And this T-shirt is a simple way to start.

Description: Sometimes we just have to speak up. It may be persuading an intoxicated friend to hand over the car keys. It may be a word of kindness to the kid at school who rarely hears one. We all need a boost of courage to speak up at times, and I hope this design gives someone that extra nudge.

Description: A parody of college athletic apparel perfect for physics enthusiasts. Get one for the science lover in your life today.

Description: A perfect gift for the lover of space and all things geek culture. The simple word "Geek" in a faintly glowing green color evocative of the aliens from your favorite sci-fi novels.

Description: Every math student and teacher needs something like this to wear on Pi Day. For those not yet initiated into the Pi Day tradition, it's March 14, based on pi's approximate value of 3.14.