Aunt Maggies slippers, a vintage pattern. My Nanna from Australia made slippers very similar to these. Double strand the yarn, and crochet the edges closed, wear with socks and you have two foot furnaces.
Ravelry: Lacey Baby Cardigan pattern by Karena Conran, Free Pattern Sirdar Snuggly DK Stylecraft Special Double Knit King Cole Splash DK Yarn weight DK wpi) ? Gauge 22 stitches and 32 rows = 4 inches in lace pattern US 6 - mm US 3 - mm