Check out these handcrafted design elements from Rampant Design, which can be easily dragged and dropped into whichever Quicktime platform you're using.
Rampant Design's effects are organic, meaning they're not plugin generated -- all the effects are real. And not only do they work well with all of the major editing and compositing software, but they also work well with plugins from GenArts, Video Copilot, and Red Giant (just to name a few of the big ones). They've currently got a library of over 10,000 design elements to work with, everything from smoke, fire, rain, snow, flares, light leaks, distortion elements -- pretty much anything you can think of. And come this Summer, there will be 10,000 more.
200 of Rampant Designs 4K style effects are free (you can get them here), but if you're interested in getting your hands on more from their collection -- the whole shebang even -- then head on over to Rampant Design's website. Prices range depending on the resolution (2K - 5K) and bundle, but they are listed at $49 all the way up to $499 (comes with XHD) for an entire volume.