Bre Pettis over at Etsy made a video on how to fix your ripped jeans. He writes:

Last weekend as I was making the roof of my apartment into a squirrel-proof fortress, I ripped the knees of my jeans. After wearing the shredded dungarees around for the rest of the day, I decided I wasn’t the type of guy who can rock the ripped denim. The jeans fit me perfect and it seemed such a waste to let them go, so I decided to fix them up. After some research I came up with this solution to my ripped jean dilemma.