It matters not if you give them away or sell them. If you are carrying items for the business, you may not do that. Transporting yourself and transacting business while at the destination is OK. Your personal effects (papers, order book, computer, etc...) are OK. But if it looks like you are delivering things via the plane, they're going to think you are carrying cargo.
By the way, I don't know how far we've strayed from the original topic, but you can't do any business in furtherance of a business on your STUDENT PILOT license. That includes just flying yourself out solo to meet a customer (no matter what you carry). That is a privilege you don't get until you get your private.
By the way, I don't know how far we've strayed from the original topic, but you can't do any business in furtherance of a business on your STUDENT PILOT license. That includes just flying yourself out solo to meet a customer (no matter what you carry). That is a privilege you don't get until you get your private.