NAMM 2013: Roland reveals Bar Trigger Pad
Roland's BT-1 Bar Trigger Pad sits comfortably within your acoustic kit (easily attaching to a snare or tom rim, for example) and can be hooked up to an SPD-SX, giving players worlds of sound options.
It can be configured for a multitude of different tasks, potentially freeing up a fair old whack of space on your drum rack.
Players with a V-Drums kit can also use the BT-1 to add extra triggers to their kit without incoporating additional pads.
For more details head to Roland Connect.