This pattern is for knit slippers, but I can totally see using a wool sweater and cutting and serging slippers from it! Home Slippers - DIY. this is knitting, but I bet I could use this to crochet some
Shoes made from one piece of cut fabric. I know these are meant as experiments for creating real shoes with only having to die cut one piece of material, but I think with my lower skill level, they might make for a fun DIY house shoe project.