This is still in kick-starter phase, but if you don't mind waiting a few months it has a lot of potential IMO: https://www.crowdsupply.com/e-radionica/inkplate

This is still in kick-starter phase, but if you don't mind waiting a few months it has a lot of potential IMO: https://www.crowdsupply.com/e-radionica/inkplate-6 https://www.crowdsupply.com/e-radionica/inkplate-6