DIY Sturdy Crochet Slipper Boots Free Pattern from SMP Craft. I really like the look of these slippers because they are unisex and don’t look like thick socks. There is one question about 1 row in the pattern - so check the comments’ section for clarification. Don’t crochet? I also like these thick knit DIY Slipper Boots with Free Patterns by DROPS Design.