I've been collecting off and on for a couple of years. I hit the church rummage sales towards the end of their day, and by that time they are saying, "stuff a bag for two dollars!" or something to that effect. A few weekends ago I got really lucky and came home with about a dozen really nice, BIG men's shirts. When they have long sleeves and are XXXL, you get a ton of fabric in them. It doesn't take long Maybe 20 shirts and you are good to go! In fact you can do several shirt quilts with that many.