Obsidian Dawn has released a free set of Photoshop & GIMP brushes for various alchemy symbols. These are all vectors at very high resolution, about 2000 pixels in size.
You'll find alchemy symbols for weights and measurements, containers, Spirits (or elements), seasons, and processes. A second set of Photoshop & GIMP brushes of symbols for alchemy materials will be coming out soon!
Been looking for a filmstrip border effect? B&B Filmstrip is a free Photoshop action set from Panos Efstathiadis. Not only will it give your photographs a film edge border, you can even apply a concave or convex effect. There are sepia and negative film effects, too. There's also a free .PDF manual to get you started.