That's a long time and they really do deserve a hand made, hand stamped card and this is the one that I will be sending to them.
I did a little masking on this card. That means I covered up (like putting on a mask) and then stamped right over the image, and presto, when you pull off the mask, there is nothing on the original image. I prefer to use a sticky note to make my mask, then it will stay in place more easily when stamping right on top of it. Here is a picture of how I did that:
Inks: Black Memento ink pad and Daffodil Delight + Pumpkin Pie Blendabilities
Card Stock: Pear Pizzazz, Whisper White, Pumpkin Pie, and Basic Black
Accessories: Pumpkin Pie Cotton ribbon, 2 3/8" scallop punch, 2 1/2" cirle punch, Word Window punch and Circle Framelits, Lovely Lace embossing folder