Mylenium, a very well known After Effects and 3D artist who posts often in forums such as Toolfarm’s Expert Forums, has some free Trapcode Form Presets for you on his website. Download Mylenium’s Free Presets.
Mylenium also has some super cool presets in Toolfarm’s store called Mylenium Presets for Trapcode Form: Pack 1 Backgrounds for just 33 bucks.
If you haven’t tried Trapcode Form yet, download a free demo.
Also, I know I just mentioned this but Harry Frank has some awesome new Trapcode Form training that was just added to the store this week.