My items are always wrapped in kraft paper or put into a kraft bag. I have these Paper Source vellum oval label stickers with my shop name that go on top of the bag. I often wrap some baker's twine or put washi on the bag as well. I was keeping it simple here.
I think it's fun when you get mail and the outer packaging looks special. I try to use fun fonts for the addresses but now that I usually print labels from home, this doesn't happen as much. There is always washi though!
Have a great one!