A 40% keyboard kit sold by KPRepublic.
Make example for this keyboard (after setting up your build environment):
The "default" keymap included is the layout I personally use on the Daisy and the one I have found the most comfortable.
A printable picture showing this layout is available here: https://imgur.com/9mSF0yf
$ make daisy:[default|<name>]
I personally had issues with the bootloader on my Daisy PCB and was unable to flash a firmware to the board after the first time. I replaced the bootloader with the one available in the repository at ../../util/bootloader_atmega32u4_1_0_0.hex