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Cooperative games, puzzles & stickers
Peaceable Kingdom lock and key diaries and journals

Secrets, dreams and wishes

Peaceable Kingdom Lock & Key Diaries and Journals for Kids

6.25-inch lock-and-key diaries with lined pages, glow-in-the-dark covers, an invisible ink diary, a keep-out treasure box and a pass-back mother and daughter journal.

15 of 15 itemsPrices checked 2026-10-06

200 lined pages · Ages 5+

Peaceable Kingdom Boys Password Diary

4.51,641 ratings

A colorful 200-page lined diary with a password-pad look on the cover, printed on recycled paper with vegetable-based inks.

$11.99

50 notes + lock & 2 keys · Ages 6+

Peaceable Kingdom Keep Out Treasure Box

4.75 ratings

A lockable box stocked with notes, envelopes, stickers and pencils, so secret thoughts and sealed letters have a safe home.

$24.95

Where to keep the key

Most diaries come with two small keys. Put one on a ribbon or keychain and hide the spare with a grown-up, so a lost key never locks out the secrets.

How many pages are in a diary?

The classic 6.25-inch diaries have about 104 lined sheets, printed on both sides.

What age is a lock and key diary for?

They suit early writers from about 6, and older kids love them too.

Do the glow covers need charging?

Leave the cover under a lamp or in daylight for a while, then switch off the light to see it glow.

Diaries with locks for kids

A diary with a lock gives a child a private place to write, which is often the push a reluctant writer needs. Peaceable Kingdom diaries come in themes from donuts and sloths to deep space and dinosaurs, several with glow-in-the-dark covers.

The Top Secret diary adds an invisible ink pen and light, and the Keep Out treasure box holds the small things a diary cannot.