Advent Calendar Day! 24 Cool Science Experiments Advent Calendar

Fun Elements of Fatherhood T-Shirts for Fathers's Day

Geeky dads will love these two fun t-shirt designs inspired by the elements. Each design uses blocks representing elements from the periodic table to spell out a word. Father uses real elements, while the more whimsical Daddy design uses fictional elements appropriate for Fatherhood. Both t-shirts are fun...

Nikola Tesla Inventions Graphic T-Shirt

This graphic glow-in-the-dark t-shirt for science geeks features images of Nikola Tesla and some of his innovations. The design uses photo style imagery plus blueprint drawings and vintage style text. This brown t-shirt is made of comfortable 100% cotton. The main caption of the design is NIKOLA TESLA...

Funny Old School Abacus Computer T-Shirt

The abacus is an ancient form of calculating tool also known as a counting frame. While the exact origin of the abacus is unknown, early frames probably didn't include letters formed in the QWERTY keyboard style as seen on this shirt. The abacus t-shirt design here features a...

Pi Day is Coming! Fun 3.14 T-Shirts For Math Nerds

We celebrate Pi Day each year on March 14, because 3.14 are the first digits in Pi. Pi is a mathematical constant that represents the ratio of a circle's circumference to its diameter. Pi is actually an irrational number, meaning it is an unending, patternless decimal.  Pi is often...