You can make your own particles on the tools menu on source games. Right click on the game you want and go to properties and then advanced launch options and type "-tools" in the space. Then when you launch the game it will open the particles editor
P.s The particle editor for CS:S is broke atm, but you can use HL2 and L4D1 & 2's editor instead.
Edit: Here's some links for you to take a look at.