Here's how to upcycle a sweater's sleeves into boot socks. I chose this sweater because the ruffles don't sit correctly on me when I wear it as a cardigan, but the sleeve ruffle will be great for the top of a boot sock.
This is a project that needs few supplies. Gather: 1. The donor sweater 2. Coordinating thread 3. Seam ripper 4. Hand sewing needle 5. Straight pins or safety pins 6. Material of your choice for the soles of the socks ( I used small men's socks folded over.)