Try to individualize each card to the person who will receive it.
While you could walk into any given tattoo parlor and simply pick a piece of free tattoo flash off the walls, if you truly want to individualize your expression, you may want to customize it.
Petticoats, plain velvet and rich jewel tones are what individualize toddler holiday dresses from other types of party apparel.
Besides the colors, there are also themes you can have to individualize your DS or purchase for your collection.
In this case, cater to the chi of the head of household in the general areas and individualize more in private areas, such as the bedrooms.