In honor of National Pi Day, these are for that friend who likes pi more than pie.

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Filled top to bottom with numbers, symbols, and mathematical equations, this tie is the ultimate math-lover's accessory. We bet they'll feel smarter just by getting suited up. To buy: $49, uncommongoods.com.
Uncommon Goods
Uncommon Goods

Math Formulas Tie

Filled top to bottom with numbers, symbols, and mathematical equations, this tie is the ultimate math-lover's accessory. We bet they'll feel smarter just by getting suited up.

To buy: $49, uncommongoods.com.

uncommongoods.com

Pi Bowl

This dish features an elegant numerical design, making it the perfect Pi Day gift for the math whiz in your life. It can be used as a salad bowl, a serving bowl, or to hold apples for a pi(e).

To buy: $98, uncommongoods.com.

cafepress.com.

Blackboard Math Wall Clock

This wall clock makes a great office accessory, and co-workers will be convinced the numbers have been drawn in with chalk. The best part? The answer to each equation matches its corresponding time.

To buy: $25, cafepress.com.

uncommongoods.com

Math Glasses

Each of these Old Fashioned glasses features equivalent mathematical constants alongside standard ounces. They'll want to reach for one of these as they're cracking a particularly tough formula.

To buy: $38 for set of 4, uncommongoods.com.

Fishs Eddy

Math Mug

The lucky recipient of this ceramic mug can study up on their formulas as they sip their morning joe. Pair with a mathematical book for an extra-special gift.

To buy: $16, fishseddy.com.