This past year I designed the ErgoBlue (https://www.xudongz.com/blog/2020/ergoblue/), a split ErgoDox keyboard that is wireless and solar powered. I'm obviously biased but I think it's a pretty unique build.
The interest check ran a few weeks ago and the group buy will run in a few weeks (group buys are essentially preorders where a certain number of quantity is required in order to achieve some economies of scale so it's not prohibitively expensive).