3.14159265359 ... Pi day (March 14)

Pi Plate

A Pi plate, you know, for pie you can eat. We give it 3.14 stars!

Come to the Math Side T-shirt

Forget the dark side and their cookies, the math side has pi.

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Pi Hole Spatula

Misha Collins’ spatula for No Kid Hungry charity is just what SPN fans need to make all those apple pies.

3.14 mile Virtual Race

An Albert Einstein/Pi day 3.14 mile (5k) virtual race.

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Pi-lingual Coffee Mug

Are you Pi-lingual?

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Pi Luggage Wrap

Show off your irrational spirit while traveling.

How To Bake Pi Book

An irrational cookbook wrapped in a mathematics textbook.

Pi Math Adventure Book

Follow the adventures of Sir Cumference, Lady Di of Ameter and Radius in this series for students.

Pi Temporary Tattoo

Perfect way to display pi, at least temporarily.

Some, but not all of these items are through affiliate links.