Baby shower ideas
The baby shower time capsule: letters to your baby, sealed until they're grown
Updated October 15, 2026
A baby shower time capsule is a collection of letters to the baby from the people who were waiting for them: grandparents, aunts, friends, neighbours. The letters are sealed at the shower and opened years later, often on the child's 18th birthday.
It's a gift that only gets more valuable with time. A teenager won't remember the shower, but they can read what their grandmother hoped for them, what their parents' friends predicted, and what the world was like the year they were born.
This guide covers what to put in a physical box, how to choose the opening age, how to collect letters from every guest (including the ones who couldn't come), and prompts that help people write something meaningful.
Why a time capsule works so well at a baby shower
Baby showers are full of people who love this child before they've met them. That's a feeling that is hard to recreate later, and a letter captures it perfectly.
It's also a calm, sit-down activity that suits every age. Grandparents who don't want to play games can write a letter. Friends who barely know what a onesie is can still write a prediction. And the letters often end up being as meaningful for the parents as for the child.
The same idea works at a first birthday party, a naming ceremony or a christening. Anywhere the baby's people are gathered in one room, you can collect their words.
Choosing the opening age
18th birthday: the most popular choice. The child is old enough to appreciate the letters, and it marks the start of adult life.
16th or 21st birthday: good alternatives depending on where you live and which birthday feels like the big one in your family.
First or fifth birthday: some parents choose an earlier date so they can read the letters aloud together. You can always hold a few back for later.
Whatever you pick, tell guests when it will be opened. People write very differently to a five-year-old than to an adult.
What to put in a physical baby time capsule
If you're also keeping a box, these are the things families are happiest to find years later:
- A copy of the ultrasound scan
- The baby shower invitation and a few photos from the day
- A newspaper or magazine from the month of the birth
- A list of today's prices: a loaf of bread, a coffee, a tank of fuel
- The hospital bracelet and first hat
- A note of the songs, films and shows everyone was talking about
- A letter from each parent, written before or just after the birth
- A small item from each grandparent
Collecting letters from every guest
The classic method is a card station with envelopes and pens. It looks lovely, but in practice only some guests make it to the table, and paper letters kept for 18 years have a habit of going missing in house moves.
A digital capsule fixes both problems. With Notes to Future, you put a QR code on the tables or the gift table. Guests scan it, write a letter to the baby from their phone and send it, with no app or signup. You can also share the link by message so relatives abroad or friends who couldn't make it can add a letter too.
Your private dashboard shows who has written, but the letters stay sealed until opening day. Then you and every guest who left an email get a private link to read them all together.
A private letter from you, too
Many parents also want to write their own letter to their baby, separate from the guests. You can do this for free on Notes to Future: write a letter to your child, choose a delivery date up to 25 years away, and it will arrive by email on that day. No account is needed, and letters are encrypted at rest.
Some parents write one every birthday, so their child eventually receives a letter for each year of their life.
36 prompts for letters to baby
Print a few of these on cards or add them to your welcome message. Guests who aren't sure what to say to someone they haven't met yet will find them helpful.
Wishes
- What do you wish for this baby's life?
- A wish for their 18th birthday
- Something you hope they'll always have
- A place you hope they'll get to see
- The kind of friend you hope they'll be
- A wish for their first day of school
- What you hope they'll be brave enough to try
- A wish for their relationship with their parents
- One thing you hope never changes about the world they grow up in
Advice for the child
- The best advice you've ever received
- What you wish you'd known at 18
- How to be a good friend
- What to do on a bad day
- The most important thing about money
- Your advice on falling in love
- Something to always say yes to
- Something it's fine to say no to
- A lesson your own parents taught you
Predictions
- Who will they look like?
- What will their first word be?
- What will they be obsessed with as a toddler?
- Which parent will be stricter?
- What job will they dream of at age ten?
- Will they be a morning person or a night owl?
- What sport or hobby will they love?
- Which family member will they be most like?
- What will they be doing on their 18th birthday?
What the world is like today
- What's on the news this week?
- The song everyone is listening to
- The price of something you bought today
- What phone you're using and what you use it for
- The show or film everyone is talking about
- What a normal day looks like for you right now
- How you know their parents
- What their parents were like before they were born
- Something you think will seem old-fashioned when they read this
Questions
How much does a baby shower time capsule cost?
A physical box costs whatever you spend on the box and cards. On Notes to Future, a digital capsule is a one-time payment with no subscription: Classic is $29 for up to 150 guest notes, and Plus is $59 for unlimited notes with photos and voice messages. Either can stay sealed for up to 25 years, so an 18th birthday is no problem.
Can we open it on the 18th birthday?
Yes. You choose any opening date up to 25 years away. On that day, you and every guest who left an email receive a private link to read all the letters.
Can we read the letters before then?
No. In a digital capsule, every letter stays sealed until opening day. Your dashboard shows who has written, but not what they said.
Can guests who couldn't come to the shower write a letter?
Yes. Share the link by message or email and anyone can add a letter. It's a lovely way to include grandparents or friends who live far away.
Can I write my own letter to my baby?
Yes, and it's free. Write a private letter to your child, choose a delivery date, and it arrives by email on that day. You don't need an account.