Hi Bitlather, I can do that! I've added the basic particles in a folder called raw_particles. If you re-download the zip file you should see it in there. I hope you're able to create the effect you want with them. Many of the animations were rendered at a higher resolution and then downsampled to get a more "pixel" effect, so a few of the particles are actually a little large. The most useful ones in there are the rainbow particles, beam particle, and the cloud particle. Since the cloud particle was one of the larger ones, I've included a downsampled 16x16 version of it as well. Of course all the heart/star/diamond/etc particles are pretty useful too, I think.
Do you think it would be useful if I included spritesheets that skip every other frame, to reduce space? It would effectively make the animations 30 FPS, but that might be a nice option...