I used to use one folded up & shoved it in my bra in the side I wasn't feeding with as I leaked alot when BF'ing.
I tucked them in my bra strap for coverage over baby when BF'ing & for mopping up any sick, spills etc.
Traditionally they are meant to be used as nappies on newborns/small babies & you can use them as nappy liners in washable nappies.
I had mine from Tesco & George - just get really cheap ones & I bought all white so they could just be bunged in the wash with all the other whites.
My nepthew has one as a comforter & if a baby is going to have a comforter then these are the cheapest to replace & the easiest to keep clean.
xxx