Having been a longarm quilter for several years, I do not expect a tip from my customers. I charge them according to my prices and don't expect more. That being said, a few customers always add to my bill, even when I tell them it is not necessary. I have also had customers bring me patterns (of quilts I mentioned I would love to make sometime), quilting gadgets, framed quilty items to hang on my studio walls and flowers to plant or hang outside (as they know I also love flower gardening). I totally agreed with ckcowl, if you want to tip, by all means do.