Printed feather-case-tabs.stl and feather-top-wing.stl in black MakerBot PLA.
Paired the Feather 32u4 Basic Proto with a rotary encoder to create a USB HID volume knob for my desktop PC. Fastened Feather to enclosure using black nylon M2.5 screws. They are not quite flush with the bottom of the case as I would like. I used velcro tape to attach this to the base of my monitor.