I’ve been swatching since I’ve been knitting, but once I verify my needle size, I usually unravel the swatch to use the yarn in the project. I’m thinking that it might be a good idea to save the swatches, and actually wash and block them; and I’m wondering how to label them with the size of the needle and yarn name.
What does everyone else do?
A lot pf places will tell you you should wash/dry the swatch how you will care for the finished item, then measure it again.
I’ve read where people make a swatach notebook and keep the swatch and associated measurements/needle sizes, etc with it.
I, unfortunately, am not that disaplined.:noway:
I’m looking for suggestions on how to actually label the swatch itself, because it’s been my experience that a bag full of swatches without labels is just a bag full of swatches…
To “save” the needle size information directly in your swatch, you can do [yo, k2tog] as many times as the size of your needle. For a #6, do it 6 times. As you may know, that will create eyelets and you just need to count them to know what needle size you used 
I hope this helps.
If your swatch is st st, you can tie as many knots in the tail as the sz of the ndl (4 knots=sz 4 ndl).
cam