I created a foodlist that incorporates both my husband and my diet (2 blood types) that is small enough to slip in my wallet and take to the grocery store. I refer to it every time I shop so I thought I'd pass the idea along to those interested. First I copied all the food lists for my blood type from the book. I then cut and pasted them together on 8-1/2x11 paper (one column per page but often combining 2 food groups per page, as they fit). I then took this to a copier that reduced it in size by 50%. This gave me typed words that fit on about a quarter of a sheet of paper. I then cut off the excess paper and stapled the lists together (about 9 pages, one-sided). To add my husband's info in, I highlighted in yellow all his "highly beneficial" foods, and put red dots by his "avoids". When folded in half lengthwise this is smaller than a dollar bill and fits nicely in my wallet. When deciding on what foods to buy I can easily pull this out and see if it's OK for both of us. I also handwrote the number of servings per day or week for both of us on the sheet to help figure out if I'm balancing the meals. It took some investment of time, but it also served to help me learn both of our diets a bit more than before.