I use a three ring binder and hole punch the papers. But that started overflowing and I got lazy, so now receipts and such are laying all over and piled in the front of the book.
Her weight is always on the receipts, so I could just usethose to compare. I try to have a ealth recordwith vaccine summaries and major health issues up to date, but her hstory is now too long, so we just rake her with us when we leave town. lol. Lab results are (in theory) filed with the receipts in date order.