Letters to Open When... (Book of 14 Letters)
Lea Redmond's book of 12 prompted letters plus 2 blank ones - write them now, seal each with a sticker, and they open one when they need a pep talk or a laugh.
$14.95Check it out
For Him / Her / Kids
Knock Knock What I Love About You Book — lands far harder than it costs
Knock Knock What I Love About You Fill-In Book
Reviewed by the WhyToBuyThis team · Updated September 2026 · How we choose
Perfect for
- Anniversaries
- Partners
- Under $15
- High feeling, low cost
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Price: $9.95
Price may change on Amazon. As an Amazon Associate we earn from qualifying purchases. This won't cost you anything extra.
- Great gift ideaChosen for real-world gifting
- Hand-pickedCurated, not scraped
- Honest reviewThe catch, not just the hype
Why this gift works
What I Love About You is Knock Knock's original fill-in-the-love book: a pocket-size hardcover, about 4.5 x 3.25 inches with 112 pages, where each page starts a sentence and you finish it with reasons, memories and in-jokes. The prompts do the hard part: most people cannot write a heartfelt letter from a blank page, but almost anyone can finish a sentence that has already been started for them.
It can be as sweet or as funny as you like, and it is consistently one of the highest emotional-return gifts per dollar, precisely because the value is the time you put in rather than the price. Handed over complete, it is the kind of thing that gets kept in a drawer and reread for years.
Who is this gift for?
Great for
- Someone hard to buy things for who loves words
- A partner who keeps every note and card
- Pairing with a small physical gift
Think twice if
- You have no time to fill it in before the occasion
- The relationship is very new
The catch
It only works if you actually fill it in - handed over blank it is a worse gift than nothing - and it takes a genuine sitting of an hour or two to do well.
Skip if you are buying last-minute with no time to complete it, or for a very new relationship where it would land too strong.
Key specs
| Publisher | Knock Knock |
|---|---|
| Format | Hardcover fill-in book with removable clear jacket |
| Size | 4.5 x 3.25 in |
| Pages | 112 |
| First published | 2013 |
Worth knowing before you buy
- It only works if you fill it in - handed over blank, it is worse than nothing.
- Plan an hour or two, over a couple of sittings.
Why we like it
- The prompts do the hard part of saying what you feel
- The value is the time you put in
- Kept and reread for years
Questions people ask
Completing it is the point, but the prompts are short - most people do it over a couple of sittings rather than all at once.
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