Time Capsule Guide

How digital time capsules work, how to write a letter to your future self, what to put inside a capsule, capsules for babies and weddings, open-when letters, and how long a capsule should stay sealed.

• What is a digital time capsule?A digital time capsule locks messages, photos and videos until a future date. How it works, how it differs from a buried box, and what makes a good one.
• How to write a letter to your future selfA practical guide to writing a letter to your future self: what to include, what to skip, how far ahead to send it, and prompts that make it worth opening.
• What to put in a time capsule: 25 ideasThe best things to put in a time capsule, digital or physical: everyday photos, voice notes, price lists, predictions — and what not to include.
• A time capsule for your babyHow to build a time capsule for your child to open at 18: letters from parents, voice recordings, everyday details, and a schedule that actually gets finished.
• The New Year time capsule ritualSeal a capsule on December 31st and open last year's the same night: how the New Year time capsule ritual works and why it beats resolutions.
• Open-when letters: the complete guideHow to write open-when letters for partners, friends and family: the classic prompts, what belongs inside each envelope, and how to do them digitally.
• Wedding and anniversary time capsulesWedding time capsule ideas: what to seal on the day, guest contributions, the first-anniversary opening, and a schedule for capsules that grow with the marriage.
• How long should a time capsule stay sealed?Choosing a time capsule duration: what 6 months, 1 year, 5 years and 18 years each feel like to open, and how to pick the right seal length for the occasion.