Let’s start with where to get gifts for the bookbinder/artist in your life.
Any local craft store such as Michaels or AC Moore will have basic supplies. Scrapbooking stores carry items such as cool papers, bonefolder, adhesives, etc. Good art supply stores such as Jerry’s Artarama will have a section with some bookbinding supplies as well as large sheets of decorative papers.
There are several online stores that sell bookbinding supplies.