http://www.amazon.com/Akai-Pro-MPD18-Compact-Controller/dp/B002LNBG1Q/ref=sr_1_8?ie=UTF8&qid=1378056987&sr=8-8
Its not the best but I find that a lot of amature tunes don't put a lot in the drums (me including) and this helps bring the same thing a midi keyboard brings to your synth game to your drums.