Getting to the sole of it

I love warm chunky knitted socks to slip on in the evenings and relax round the house in. But I wear holes in the heels. I have darned the socks twice. And there are more holes in the heels. So they sat in the basket for ages looking forlorn. And I had an idea... maybe I could use the sleeves of a jumper I felted by accident to make felt soles that I could sew on ....? Yep it works! So now have double thickness soles and hopefully a darnfree winter ...