|As my stash grows, I've found that I have to fight with my memory to recollect what the fabric content/care etc is for some fabrics. ;) Luckily for me, I took the Fabric Fundamentals course and saw how nicely the swatch records were kept in a binder.
When I order online, I print the fabric care & content info (example - http://store.yahoo.com/phoenixtextiles/x-669.html)
and put it with my binder of swatches. When the fabric arrives, I cut a swatch (2" crossgrain x 3" grain) and copy the fabric info onto the swatch sheet (3 swatches per page, and indicating where the fabric was purchased, etc etc). I use a photo glue stick to attach the swatch to the sheet at the top so that it hangs loose on-grain.
For specific fabrics where I need to reference how a fabric changes when it is pre-treated - (washed or steam ironed, ie silk) I take several swatches and treat them differently. For instance, I have several swatches of the same silk jacquard;
-one is just pressed with a press cloth,
-one is pressed without the press cloth,
-one is steam pressed with a press cloth to preshrink,
-and one is washed in Woolite, air dried and steam pressed with a cloth.
This really lets me compare how the fabrics react and whether I want to make something that could be washed or has to be dry-cleaned. I wouldn't be able to make those comparisons if I didn't have the fabric content/care right there with the swatch. Then each pretreated swatch is labeled and added to the binder with the treatment for side-by-side comparisons (and to help with my memory!!)