Dress up your pooch in this funny black costume t-shirt with simple white text that reads SECURITY on the back. 

It's a bird! It's a plane! No, it's SuperPooch! Dress up your own personal furry hero in this officially licensed costume t-shirt for dogs. The iconic Superman logo is featured on this blue dog shirt.

Dress up your little rascal in traditional black and white prison stripes with this costume t-shirt for dogs. Your companion will be County Jail Inmate #5468106, but you can still call him by his name.

This green shirt for dogs has a big print of a Frankenstein's monster style face. The monster shirt is perfect for Halloween fun.

This adorable Halloween-inspired dog t-shirt has a perfect slogan for trick-or-treating with your pooch! The shirt uses mixed stylized text to say "Will Trick for Treats!" The slogan is accompanied by cute little cartoon dog bone treats.

This fun element-inspired t-shirt design features the imaginary element of "Pumpkin" with the symbol Pu. The stats for this whimsical, made-up element include the atomic number of 94.  The element is shown inside a big orange square, making this fun design perfect for fall, Halloween, and Thanksgiving celebrations.

Here's a simple and funny costume idea for someone who loves chemistry and wants to keep their costume simple. The long-sleeve top features the word SCARY spelled out using elements from the periodic table: Sulfur; Carbon; Argon; and Yttrium. The elements are presented inside squares that alternate between purple and orange, perfect colors for Halloween and autumn. This scary design is available on different apparel options, including short sleeve tops and sweatshirts; visit the product page to see more options.

Dress up as the world's most nerdy pirate this Halloween with this funny and simple element-inspired t-shirt. The element of Argon is featured with the caption "I'm a Pirate" in the place where the name would normally appear. Wear this one on Halloween, Talk Like a Pirate Day, and any other time you're feeling in a pirate mood.

This fun graphic t-shirt features the imaginary element Zm, called "Zombie", with the atomic number of 13 (actually 13 is Aluminum). Dress up as a zombie with this simple costume t-shirt and share your love of chemistry and/or science. The all-white graphic image pops on a black t-shirt as shown here, or use Zazzle's tools to choose a different apparel color or style.

These sunglasses have a wood-look and the unique branch-shaped forehead of Groot from the Guardians of the Galaxy.

The top of this pair of glasses mimic Captain America's iconic old-school headpiece.

This fun pair of sunglasses feature elongated almond-shaped lenses that mimic the mask of the Amazing Spider-Man. The glasses extend over the forehead with the iconic red spiderweb motif.

This fun pair of glasses has a mask-like extension that resembles the green skin and wild thick black hair of the Incredible Hulk.

This fun set of costume sunglasses will transform the top of your face into Rocket's! Rocket's ears and tufted hair are featured above the raccoon's angry eyes.

The top part of this pair of costume sunglasses looks like Thor's battle helmet, complete with side wings.

These sunglasses extend above your forehead to include the iconic extended wings worn by the comic book character.

This black and white illustration is done in the style of a chalkboard drawing. Mickey is shown presenting the positive mantra spelled out using mixed fonts. This stylish mouse pad with its encouraging message will fit in with a variety of office decors.

Minnie Mouse is drawn in watercolor style with a lovely pink and white polka dot pattern as the background. Customize this sweet mousepad with your own name to make it your own!

This fun novelty mousepad is perfect for fans of Toy Story -- the subtle illustration doesn't look like it references a classic cartoon series, but it does! The logo is done in shades of neon-look lines against a black background.

Can you find Sulley, Mike, Randall, Boo, and others on this cute detailed mousepad? The characters and text are featured in the bright colors associated with the Monsters, Inc. series. Everything pops against the black background of this fun novelty mousepad.

An old-fashioned futuristic logo features on this vintage style mousepad. The slogan "make the future" appears under the illustration and Disney Tomorrowland branding.

This cute grey mousepad features a simple illustration of the famous bear Winnie the Pooh. A great quote by the character features above: THINK THINK THINK. This is a great mousepad for students, office workers, and anyone else who could use the encouragement of this little always optimistic bear.