i've kept a 'quilt journal' for years (although not every project has been making it in...)
it is a 3-ring binder- I put in fabric swatches, notes about the quilt (who it's for, what pattern i used, anything special, what batting i used, size, dates, what ever i think is worth adding at the time) any notes about problems...what ever & pictures ---sometimes of the steps involved- sometimes just a finished product. sometimes a picture of it with a ribbon- or with the person it's for...some quilts have various pages- some only one page...it's nice sometimes to be able to look though it- sometimes i'm surprised- gosh i forgot all about that quilt! I think i have 3 binders to date-and probably need to pick up another one. I also have plastic sleeve (envelopes) in the binder- they were fairly inexpensive- picked up 100 clear sleeves at the office supply- i can slide things into the plastic sleeve that i don't want to punch holes into- they already have the 3-holes & fit the binders.