Usually buttons for jeans are made of a metal/ non metallic substance. They have buttons but if not what you are looking for, may I recommend Jo Ann Fabrics or maybe even Wal-Mart??? Good luck
If they do not have them, try using fabric glue or adhesive. If it is clothing you are using the buttons on, you may need to dry the article on a flat surface. Hope your project turns out well.
Not sure, but they have a huge selection of buttons
I am not sure but they have a huge variety of sewing items
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