I designed a snap together case for the TTGO T-BEAM. It prints in 4 parts that are all designed to be printed without supports. The Front, Middle and USB Slider are intended to stay together and the Back is designed to be removable for access to the battery. The under side of the case has tabs that push the corresponding butto. This case isn't easy to print as it's got very tight tolerances in some places. I printed it on an Ender 3 V2. On the battery cover I included some ribs on the interior, they are there to help with the long bridges that occur when printing the rounded back, the ribs are expected to be frayed a bit on the iide but you should get a nice exterior on the case. I also included a model I drew of the TTGO T-Beam V1.1 that can be used for help designing cases if anyone else wants to take a crack at it. Note: The parts need to be printed in the orientation shown on the photo. Also, the tabs that hold on the battery cover can snap if you're not careful when removing the cover.