Recently "kelliejh2014" on ebay released an OLED hat for the Raspberry Pi 1541Pi project.
I've been looking at the various hats that have been showing up lately in the community for this project, and settled on this particular vendor.
I'm in the process of re-purposing a recent Raspberry Pi case design that I used for the Texas Instruments community. I test-fit the board/hat combo and it fits perfectly in the base of the case. The beauty of this design is that it's a highly ventilated case with the ability to be used flat or with the purpose built stand.
I will be working on a revised lid that will work with this hat. It will give access to the IEC port on the left side of the board, as well as convenient access to the buttons and OLED display.
Here are some photos of the board/hat installed in the base, with and without the stand.
This case design is compatible with the Raspberry Pi 2, 3, 3+