I found this little gem from Tesseract while browsing for sequencers. With the expander, it just fits in this pod!
ModularGrid Rack
Funny thing is this Tesseract isn't only a sequencer and midi-capable as well. It also has a sample player and a very basic drum synth built in.

I still need to look into it more deeply. There's only 4 cv in and I don't know what they can be mapped on. PS: just looked it up. Those cv ins can be used for literally anything - Euclidean length, filter resonance, drum synth decay, reverb level, you name it. Pretty impressive!

Modular playlist on SoundCloud