In my review of The Art of Resing Jewelry by Sherri Haab I mentioned she lists some interesting sources.
One of them is her own website, where you can sign up for her newsletter, shop for supplies, kits and neat stuff you may have seen in her books. Here’s the link for the resin molds for projects in her book.
One of the projects in the book uses store bought charms to make a photo collage bracelet. One of the nicest “photo frame” type charms I’ve seen recently is from the new company, Patera Findings. They are not precious metals, but have more style than most products of this type.
Even if they don’t fit in with your jewelry making, you might like them for scrapbooking or small gifts such as bookmarks.