Donovan Harshbarger

Description: In the garden of Gethsemane, anticipating the agony of the cross, Christ retreated to pray. But too often we face trials and temptations for far too long before it occurs to us to pray. Let this shirt remind us to connect to God in the good times and bad.

Description: An amoeba, complete with contractile vacuole, nucleus, and more, waves goodbye in a pun on "arrivederci," the Italian word for goodbye. A great gift for biology teachers and just those who love a good pun.

Description: This geometric collage features images of planets, nebulae, and more taken by the Hubble telescope and other space-based observatories.

Description: Take the "choose kindness" message a step further. Even when it's hard, choose kindness anyway. An inspirational message in letters formed from tiny hearts in cute pastel colors.

Description: Five lines of Python code. 'Never' ... 'gonna' ... 'give' ... Watch your friends and coworkers freak out as they finally decipher your shirt. Geek shirts have never been so much fun.

Description: A parody of tourism t-shirts in a retro style, the roadway recedes into the distance, liberally sprinkled with opossums. Perfect for the travel buff with a sense of humor.

Description: For the ultimate fans of the Hitchhiker's Guide to the Galaxy, here's the ultimate 42 design, featuring the number 42 forty-two times, with a geometric triangle texture rather than a simple solid color for extra artistic flair.

Description: The cow jumped over the moon, but not necessarily on the first try. Funny in a mildly twisted sort of way, it inspires us to persevere.

Description: Cute aliens display the quadratic formula like you've never seen it before. It's a great gift for math teachers, adorably geeky sci-fi enthusiasts, and more.

Description: There's nothing weird about girls loving science. But when I look at science t-shirts, I'm struck by how few feminine designs there are. So here's my attempt to fill in the gap a bit.

Description: Another cow has been pressed into service for a mathematical joke, but this time in the graphs of sine and co(w)sine equations. The perfect gift for the math teacher or pun enthusiast.

Description: Peace is good. Cats are good. So why not a peace sign formed from our adorable kitty friends?

Description: Frolicking about the ocean with sharks and flying a kite in a thunderstorm, but still too smart to text and drive. A serious message in a lighthearted style, created in the hopes that a little humor might get through to someone and prevent another senseless tragedy.

Description: Part pixel art, part 80s video game, fully geek pride. The perfect gift for the proud geek or nerd in your life.

Description: A hilarious combination of dog shaming pictures and a common science error. One dog drinks from the toilet; the other confuses mass and weight. The perfect gift for the science teacher with a sense of humor.

Description: People spend a lot of time watching funny cat videos. In this amusing reversal, a cat watches videos of funny human fails, including bad dancing. A great gift for the cat lover with a sense of humor.

Description: Looking for an original gift for that special someone with a sense of humor? Here's an amusing update to the tired cliche, sure to warm the heart of the one you love.

Description: A parody of gritty police and crime show scenes, the chalk outline of a pig means this is a job for the homicide...er, hamicide...squad. Great for your loved ones who love puns, and if they happen to be in law enforcement, all the better.

Description: The punny response to "It's all good in the hood," with a bit of nature-loving, earth-friendly sentiment.

Description: To be honest, I've warmed up a bit to spiders, especially since I learned that they eat wasps. But I can still be inspired by a few friends who haven't yet grown to appreciate our eight-legged friends.

Description: Do you know a photography enthusiast with a sense of humor? You may have just found the perfect gift.

Description: Celebrate the joy in your heart with the simple one-word message in a fun and bright typography.

Description: The perfect gift for the pun enthusiast in your life.

Description: A dance shirt deserves fun typography; bright yellow and purple seem to almost bounce off the shirt in this high-energy design.

Description: A message to inspire perseverance presented in a youth-friendly design that is part glitch, part distressed, and full of energy. A perfect gift for teachers, athletes, entrepreneurs, and anyone else pursing excellence.

Description: Bacon is simply too magical to attribute to an ordinary farm animal. I believe the unicorn is a far more likely source.

Description: In my days as a math teacher I sometimes had piles of papers a little too much like this one. Teachers have been known to procrastinate too from time to time, so we'd might as well laugh about it. And it makes a great gift for the hard-working teacher in your life.

Description: What could brighten the day of the pun lover in your life more than a groaner moose pun?

Description: Snippets of musical favorites from Bach, Handel, and Mozart adorn the sky in this design for the music lover.

Description: Because love is powerful. There is no better antidote to hate.

Description: The poem is Emily Dickinson's classic "She sights a Bird – she chuckles."

Description: Definitely not the same old Christmas shirt. Spread some Christmas cheer with this adorable kangaroo, and be sure to pick one up for that deserving person on your gift list.

Description: A different sort of cat design, originally created as a gift for a relative who seems to have every other cat shirt on the planet.

Description: A reference to the classic physics joke about physicists and their problem solving methods, as embodied in the punchline "But it only works for spherical cows in a vacuum." The perfect gift for the physics student or teacher with a sense of humor.

Description: Teaching is a tough job. Teachers don't teach for the money, or the fame and fortune, or to get summers off. Here's the tongue-in-cheek response to those who don't understand.

Description: Cat lover? Not afraid to be a little silly with the Christmas spirit? This is the design for you. And if it isn't, surely there's someone on your gift list who deserves this.