The only real hardware requirement of Willow (currently) is something based on the ESP32 S3 that has a microphone.
I'm aware of various such devices out there but we've been really focusing on the ESP BOX. If you or anyone else in the community is interested in other devices we'll certainly look at supporting them!
Are there any similar devices, without a screen, available?
Preferably with a nice design, so I don't have to hide them?