Thank you, in pieces
A text is easy to skim. A photo they have to finish is harder to ignore. Hide the thank-you until the table is complete.
Short link, hidden sentence, about 3 days on the server. How it works.

Try a puzzle gift
Solve this 12-piece example to reveal a thank-you note. Then make one with your own photo and words.
Play the example →Photo: Sebastian Unrau