Any vintage Singer feet or attachments will fit a Featherweight as long as they are short shank. All of my accessories for my Singer 201 will fit my Featherweight. Singer slant needle machines (301 for example) have feet that will not fit a Featherweight. I often can find boxes of old Singer feet and attachments at my local second hand store for next to nothing. Somehow they seem to get easily separated from their original machine. I bought a buttonholer for $3 and a box with a zipper foot, ruffler, seam guide, screw drivers etc for $1.