VinhSon Nguyen has a number of free products hidden away on his Creative Dojo site, including the Dojo Toolkit and Dojo Glitch scripts for After Effects, and as well as Free Ink Mattes, Free Light Leaks, and Dojo Color Preset packs.

Related AE Portal roundups with additional resources include Using and creating After Effects scripts and Light leaks, free lensing, and lens wacking.

Here's the demo for Dojo Toolkit, a personal assistant script that some might find useful.