I recently got myself a Novation Launchpad because I was tired of only ever using MIDI keyboards to make music and wanted to mix things up.

Then I discovered that it has MIDI in...

Needless to say, I haven't made any music with it yet, but I did make a program that makes the lights blink real nice. Even ended up creating a little pseudo scripting language to sequence the effects.

It's browser based and you can play around with it without any hardware. (not intended for mobile use) https://gridlitx.onrender.com/