While playing acoustic guitar you can get a snare drum effect by sliding your flatpick under the low E string near the soundhole and then over the A string and while keeping the point of your pick in contact with the fingerboard bring in up so it's perpendicular to the strings then slide the pick up beyond the 3rd fret and depress the 2 strings together like your playing a Low G. I use this for fast jigs in G like the Kesh. In order to get a decent sound you might have to adjust your lefthand fingering and do a bit of muting with both hands. You can also catch the G string on the upstroke and hit it a couple of beats or if your really nimble play a triplet on it. Like I say it's takes a bit of experimentation. vl