Home Shop Cart Account

New & Featured
Planners
Notebooks & Journals
Stickers
Accessories
Shop by Theme
Gifts & Crafts

Planner Extensions

Planner Extensions

Price

Min

-

Max

Collections

All Bundles + GiftingAll Product12 Month PlannersAll Catalog rewards2026 PlannersBullet Dot Grid Happy Journal® Collection40% Off Goal Setting EssentialsHoliday Gift GuideSticker Fan Books35% Off Snap-In AccessoriesBotanical FloralsSticker PacksStickers with SentimentModern Elegance CollectionBe Happy BoxesTotesMidnight Elegance CollectionHello Happy CollectionArtist CollaborationsWhimsy Gardens Collection

Subscribe to our newsletter for exclusive offers, new arrivals, and style inspiration.

Shop

All Products
New Arrivals
Sale

Company

Shipping Info
FAQ
Contact Us

About

About Us
Returns
Privacy

© 2026 Happy Planner. All rights reserved.

-70%NEW

Everyday Fill Paper - Half Sheet - Classic

$2.79

$0.84

-70%NEW

Classic Planner Companion - Wild Styled

$12.99

$3.90

-70%NEW

Classic Planner Companion - Stronger Together

$4.04

$1.21

-70%NEW

Accessory Pack - Rongrong - Hustle Girl

$4.19

$1.26

-70%NEW

Cyanotype - Classic Vertical Hourly Extension Pack - 4 Months

$2.99

$0.90

NEW

Happy + Mod Today's Agenda Classic Filler Paper - 40 Sheets

$1.74

-70%NEW

Modern Months - Specialty Daily Big Filler Paper - 24 Sheets

$3.99

$1.20

-70%NEW

Spread Some Happy - Bullet List Classic Filler Paper - 40 Sheets

$2.09

$0.63

-70%NEW

Celestial Elegance - Dotted Lined Classic Filler Paper - 40 Sheets

$2.09

$0.63

NEW

Classroom Seating Charts & Behavior Trackers - Big Teacher Accessory Pack

$3.24

-70%NEW

Jess Miller Draws x Happy Planner Seasonal Teacher - Big Accessory Pack

$3.89

$1.17

NEW

Classroom Field Trips - Big Teacher Accessory Pack

$1.94