Account
Shop by Weght
Shop our Favorites
Shop by Fiber
Ethical Yarn

Plied

Crochet Tools

Cart

Your cart is empty

Continue shopping

String Theory Merch

At String Theory, we work to make the world a better place with peace, love, and yarn.

Thank you for being part of the community that makes this possible.

6 products

Sort by

Featured Most relevant Best selling Alphabetically, A-Z Alphabetically, Z-A Price, low to high Price, high to low Date, old to new Date, new to old

Filter

Refine

view all

Tools

Brand

clear

Collection

clear
Product type
Brand

Sort by

Featured Most relevant Best selling Alphabetically, A-Z Alphabetically, Z-A Price, low to high Price, high to low Date, old to new Date, new to old

Filters

Filter

Refine

view all

Tools

Brand

clear

Collection

clear
Product type
Brand
ST Needle Gauge - String Theory Yarn Co
katrinklesST Needle Gauge
Sale price$18.00
WPI Yarn Weight Gauge in Tools - notions | String Theory Yarn Co
katrinklesWPI Yarn Weight Gauge
Sale price$11.00
(5.0)
Sold outSave 27%mini tool wrap and turn in Tools - notions | String Theory Yarn Co
katrinklesmini tool wrap and turn
Sale price$8.00 Regular price$11.00
Save 45%mini tool make 1 in Tools - notions | String Theory Yarn Co
katrinklesmini tool make 1
Sale price$6.00 Regular price$11.00
open shipping box revealing 31 kraft paper envelopes with numbered stickers.

Box of Light 2026

31 surprises to countdown to the new year

Preorder now
mini tool kitchener in Tools - notions | String Theory Yarn Co
katrinklesmini tool kitchener
Sale price$11.00
(5.0)
2" Gauge Swatch - String Theory Yarn Co
katrinkles2" Gauge Swatch
Sale price$12.00

Filters

Filter

Refine

view all

Tools

Brand

clear

Collection

clear
Sort by
Product type
Brand

Free in-store pickup available

10¢ shipping on orders over $100