A rigorous survey (a quick poll amongst friends) suggested that one of the hardest gifts to buy are for anniversaries.
Take my very own parents, Mama and Papa J, who celebrated their 30th wedding anniversary in September. I obviously wanted to get them something special and unique; reaching your pearl anniversary is quite an accomplishment, but what can you realistically buy made out of pearls? Nothing. By incorporating the image of pearls (or diamonds, rubies, paper…) into an illustration, you can put a creative spin on the traditional anniversary gift.
Warning: Do not give this gift in public; my mum cried IN A RESTAURANT. It was appalling.