Example
You two argued about the seating chart for three weeks and then cried through every speech. Ten years from now, I hope you still argue about small things and cry at the big ones.
— Your best man, table 4
For a wedding
A guest book gets signed in a hurry and read once. A time capsule gets a real letter from each guest, sealed until a day you choose, so you read them together years from now, when the words mean more.
Pick the opening day, say your 10th anniversary, and add both of you as recipients.
Print the invite link as a QR code on the tables or send it the morning after. Guests write on their phones in a few minutes.
Give guests a week, then seal it. On your anniversary you both get an email and open it together.
Pick two or three. A few honest lines beat a long letter nobody finishes.
Example
— Your best man, table 4
Also: for your child · for a graduating class · for yourself