A birthday card for your best friend, built on the in-jokes

Best friend cards run on one fuel: shared history. The cover should be the trip, the hobby, the recurring disaster — the thing that makes them laugh before they've opened it. Describe it, we paint it, and they know in one glance this could only have come from you.

Cover ideas only they would get

• The holiday that went wrong, rendered fondly.
• The two of you as your shared obsession — otters, plants, karaoke.
• The pet they love more than most people.
• Them, triumphant, at the thing they're weirdly good at.

What to write to your best friend

Skip 'have a great day' — they know you mean it. Go for the real sentence: "Fourteen years of you answering the phone at the worst times. You're the best decision I never actually made. Same time next week, usual table." Then one line of genuine warmth. Best friends forgive anything except generic.

Left it late? A digital card is $1.99 and arrives in seconds, scheduled for 9am their time if you want it civilised. Milestone year? The printed card is $9.99, posted for you.

The long-distance best friend

If they're in another country, the digital card is the answer: anywhere in the world in seconds, no international post gamble. Schedule it for their timezone, not yours, and it lands on the morning of the day rather than at 3am.