I mostly use one shot samples. Layering is also something what i do, but not always.
I also like to add distortion to the single drum elements. Mixing the normal sample together with a distorted copy.
I do not like to use loops too much, with the exception of breakbeats.
I didn't record any drum sounds myself in my homestudio yet, but i've always had that idea in my mind, just like highqf did. Using things from the kitchen or just the own body to produce unique sounds for the recording.