Onesie one offs

I've found myself spending way too much time figuring out how to get good color on a 100% cotton tshirt. Crayola fabric crayons are so nice when you can draw in a sheet of paper and then transfer via iron, but it washes right out of all cotton fabric. These are my second investigation... Marcy and deco markers. Photographed them prior to an iron and wash. Pentel dye crayons are being shipped to me. Hopefully one of these works well enough to be a baby shower crafty gift for my friends to make!