The kickstarter for the Bitty pocket drum machine/synth is already funded but I thought tiny-device-heads here might be interested in it.
I’ve played one, it’s super fun and performable. Not as complex as the TE Pocket Operators (no 16-step sequencer) but still capable of a lot of expression and variety. Plus the speaker is substantially louder, and it’s hackable using the standard Arduino tools.
edit: not sure why the KS preview image isn’t loading, here’s a picture: