Tyler from Eventide introduced us to Misha, an interval-based instrument and sequencer.
Misha lets you play live, or create sequences using its 9 interval keys, generating musical ideas which might not have arrived ordinarily. The sequencer can be polyphonic, and has many ways of modifying the sequenced notes, inverting them, randomizing and altering the note order, or changing the scale on the fly. Speaking of scales, Misha has 100 built-in scales ranging from the familiar to the experimental, and it's possible to program your own scales too.
Eventide Misha available: end of summer 22
Price: 599 USD
https://www.eventideaudio.com/rackmount/misha/
Older Music Machines & the People Who Still Use Them