What to put in a pregnancy time capsule

A pregnancy time capsule sounds as though it ought to involve a metal tin, a ceremonial spade and a date forty years in the future.

It can be a small box on a shelf.

The point is to keep a little of the world before your baby arrives: what your life looked like, who was around, and the small things that might otherwise slip away. Nothing needs burying. Quite a lot of important family things are already difficult enough to find.

Start with a container, then stop shopping

Use a clean box, a folder or an envelope you already have. Choosing a small container is useful because it asks you to choose. An entire spare room is less effective at this.

Write a name or a description on the outside and add the year. If you haven't chosen a name yet, “Before you arrived” does the job. The baby will not mind the filing system.

Keep it somewhere dry and easy to remember. For paper and photographs you particularly value, consider suitable archival sleeves or a keepsake box intended for those materials. A digital copy gives you another way to keep the words and pictures if the originals go missing.

What to put in a pregnancy time capsule

Choose a few things from this list rather than collecting all of them:

• A letter to your unborn baby.
• A photograph of your home as it is now.
• A short note about the people waiting to meet them.
• A baby-name shortlist, including the names that nearly made it.
• A ticket or receipt from a day you want to remember.
• A list of the songs, books or television programmes around you.
• A picture of something you have made or chosen for them.
• One message from a friend or relative, with their permission.
• A small drawing from an older sibling.
• The price of an everyday thing, written down with the date and place.

A name shortlist can have a digital home too. In the Kins app Andrew and I are building, you can look up names and their meanings, take the name quiz, and save favourites while you’re expecting. Those names stay in your child’s profile as “Names before you arrived” after the birth. Keep the scribbled list if you love it; the saved names give that part of your time capsule another place to live.

Objects need a little context. “The ticket from our last trip before you arrived” tells a story. An unidentified scrap of paper tells your future self to spend twenty minutes squinting.

Do not worry if your collection is unglamorous. The familiar supermarket, the view from the bus and the kitchen before the high chair appeared are part of a life too.

Add voices as well as things

A physical box cannot hold a voice on its own, but it can hold a note telling you where a recording lives. You might record a short hello, ask someone what they are looking forward to, or let an older sibling explain their plans.

Keep the original file somewhere you trust, with a separate copy if possible. A printed link or QR code may be convenient, but don't let one changeable link become the only way to reach a memory. Write down the file name and storage location too.

There is no need to ask everybody for a contribution. You can keep the box personal, or invite one or two people whose words you would like to save.

Give it an opening date, or don't

Some families enjoy the idea of opening a capsule on a birthday. Others want to look through it whenever they fancy. Both work.

If you choose a birthday, keep the date flexible. You might want to show a child the photograph of their old room before they are old enough to read the letter. The objects and the words do not have to be revealed together.

And keep the contents separate from anything needed for appointments, identification or everyday care. A keepsake box is an excellent place for a story and a poor place for paperwork you need tomorrow morning.

Our family's missing book from Abby's arrival helped inspire Kins. We would love to have its words again. That makes the final step rather important: tell your future self where the box is.

For a smaller ongoing habit, try a two-minute pregnancy journal. A few good details are enough for a time capsule. Leave some room in the house for the person it is about.