Hi.
I would contact your closest small business association chapter.
They can help you online if it's too far to visit. It's a great resource. They have lawyers, accountants, and any other professionals you would need help from all for free!

What you are wanting to do sounds a lot like the Esty.com website.
Maybe you can google them and check out their site for ideas.
Perhaps you could sell your friends stuff for them on esty for a consignment fee? Just to see if your idea is profitable before you invest on your own site.

Best of luck!