https://www.cnet.com/news/sphero-specdrums-let-me-turn-ces-2019-carpets-into-sweet-music/

Sphero Specdrums on my finger. It responds to tapping via an accelerometer, and then samples color through its sensor.

Sphero acquired the Boulder Colorado-based Specdrums company in 2018 as part of a focus to expand Sphero's footprint in STEAM education. The "A" in STEAM stands for "Arts," and Specdrums are Bluetooth MIDI-compatible finger-worn musical instruments, focused on musical creation and, eventually, coding. Sphero has been shifting more towards education with its robotics and coding initiatives over the past few years, and Specdrums look like a continuation of that mission.