The Roland Mood Pan is a Bluetooth speaker and music instrument Based on traditional acoustic handpans, and it's a MIDI trigger It costs $659 / £544 Roland's Mood Pan sounds like the title of a ...

Custom MIDI Guitars with LED fretboards, a body full of pads & knobs, and string triggers were being fabricated by Starr Labs in San Diego. They make the most responsive, velocity sensitive, 6 ...

You could use MIDI trigger pads, but they still need a drum brain to work, it would be cheaper to buy a digital drum bad with MIDI output. I've seen some which are made of silicon (less than $20).