Ugh Leftover Yarn

I’m one of those people that gets angry about not having enough yarn to complete a project so. I always buy a bit more than what I need. Since I'm a few miles away from the the shops. Because I like experimenting with different types of yarn, I tend to have bits and pieces left over. I usually use them to make small doilies or similar small projects but now have run out of people to give my doilies to!

What do you do with your left over yarn?? Do you save it, throw it away, use it to make something small? I searched and found 6 Good Ideas.

But I am open to more suggestions ; ).