Gifts Under $15

Celebrate the irrational, transcendent, and never-ending ratio with our Pi (π) Day collection of gifts! You’ll find pi-themed jewelry, baking accessories, apparel, and more.

Celebrate in-person: Join the 37th annual celebration of Pi Day on Thursday, March 14 with free pie, a Pi parade, live music, and more!

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The socks are green with purple on the heel, toe, and top edge. There are four blue and magenta hummingbirds in different stages of flight moving up the socks.
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Hummingbird Sock (Women's)
$ 12.00
Blue sock with red octopuses placed in different spots.
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Socktopus Socks
From $ 10.00 - $ 12.00
The pouch is a natural color with three different vintage images of color wheels systems represented. On the left side, there are circles with varying mixes of yellow, red, blue, green, and violet. On the right are a color-plus system and a 21-color spectrum.
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Color Wheel Pouch
$ 15.00
An iconic image of the Golden Gate Bridge over San Francisco Bay with the redwoods gateway is printed in California's upper right corner. The dimensions of the product are 2 1/2" x 5".
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California Redwood Grow Kit
$ 10.99
A 4"x 5" round canister of mixed wildflowers. The label looks similar to a watercolor painting in appearance—a blue and purple background with several different wildflowers in yellows, blues, white, and pink.
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Wildflower Grow Kit
$ 10.99
A blue canister with orange California poppies on the outside. The name and scientific name are in orange, The canister is 1.5" x 3".
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California Poppy Grow Kit
$ 10.99
A blue sock with dotted with large sunflower heads; the toes and heels are a darker blue.
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Sunflower Socks
$ 10.00
Small decision maker showing a ball hanging on a piece of wire suspended over the decision board at the base.
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Decision Maker
$ 11.95
3-D Dino Cards packaging with a cut out front showing a lenticular design of a T-rex biting another dinosaur on the first card.
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3D Dinosaur Playing Cards
$ 9.95
Cherry tree packaging with an image of the fully grown cherry tree crystals beside it.
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Cherry Tree Crystal Growing Kit
$ 7.00
Giant Sequoia Crystal Growing Kit
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Giant Sequoia Crystal Growing Kit
$ 7.00
3/4 front view of the Biplane model kit. The model is an open design with the inner pieces visible from the exterior. Rubber bands lace around the wheels and through the body of the wooden model plane.
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UGears Mini Biplane
$ 14.99
Side view image of the completed model. The entire model is silver with a cylinder body and flat rectangle pieces on either side of the body. The model is suspended above a square base with a curved metal piece.
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Hubble Telescope Metal Earth
$ 7.00
Golden hexagon earrings with the numbers of pi in a spiral. The symbol for pi is engraved in the center, as well as the word "shrine."
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Exploratorium Pi Shrine Earrings
$ 14.00
Black pouch with images of the planets organized from largest to smallest. The pouch has a zipper on the top with a brown leather cord pull.
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Astronomy Chart Mini Pouch
$ 13.00
Colorful illustration of two figures plugging into a giant socket.
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Science Comics: Electricity: Energy in Action by Andy Hirsch
$ 12.99
Cream colored canvas pouch with images of various wildflower specimens printed on the front. A brown cord pull is attached to the dark grey metal zipper.
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Vintage Wildflowers Pouch
$ 15.00
Circular metal pendant with numbers circling the edge and a pi symbol charm attached to the front. The pendant and charm are attached to a circular keyring.
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Exploratorium Pi Keyring
$ 14.95
A 5" x 6" package with a close-up of an Astronaut in a white spacesuit holding a freeze-dried ice cream sandwich. Space Rover is reflected in the face shield of the helmet. A freeze-dried vanilla ice cream sandwich is sitting in front of the package.
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Freeze-Dried Vanilla Ice Cream Sandwich
$ 5.50
Mini Newton's Cradle
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Mini Newton's Cradle
$ 12.99
a pink square box with different cartoon charms arranged around the box. The title of the product is large and in the center of the box in purple.
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Shrink-Its
$ 13.99
Origami 3D Ladybugs
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Origami 3D Ladybugs
$ 11.00
The kanoodle black case is open to reveal the multicolor round pieces arranged neatly inside. There is an image of the closed case and packaging on the left side.
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Kanoodle Game
$ 14.99
Six rectangular packages are shown. Each package is a different color and include yellow, pink, white, red, black, and blue.
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The OffBits Color Kits
$ 7.95