Some people do. By organic material do you mean a soil mix? If so, I would simply start them off in a beer cup or something, and slowly transport them into bigger pots as the root system expands.
I put my seeds directly into rockwool, I find there's less handling if I do it this way... I use the rockwool with no holes so I can push the seeds just under the surface of the rockwool... Works great for me....
