Plenty of history to work with
Fifty years normally means enough hobbies, fashion choices, work stories, family legends and repeated catchphrases to fill several cards. Give the generator the best material and let it build the joke around them.
Funny rather than formulaic
The front and inside message are created for this recipient, so the result does not depend on a fixed catalogue design. You can keep the humour warm or deliberately inappropriate for somebody who enjoys being roasted.
Simple online ordering
Pick the version you like, approve the final wording and continue through secure checkout when the live print connection is ready.