I am very careful in cutting fabrics and avoiding waste. That's the biggest thing for me. I don't keep the tiny pieces of scrap, but I try really hard to avoid waste otherwise. That goes for buttons, zippers, etc. Everything in the studio is worth $$$ if I have to replace it. I also cut up clothing that is in very good condition and salvage buttons, zippers, hook and eyes, and so on. Same with purses. Since I like to make purses for my etsy shop, I know the cost of purse components. I try not to purchase any notions for purses I make for family and friends (especially if they aren't paying).