Simple Case - Heltec T114 with 18650 Battery and GPS by willie42 on Thingiverse: https://www.thingiverse.com/thing:7288211

Summary:
I found several cases - but none in this combination. So I drew my own.T 144 without display, one 18650, gps module and the little standart antenna.Printing the body: use supports.Use 2.5/8 mm Screws (2.5/10 will fit as well - even 3/8 or 10 should work).EDIT: Now added the design for the version with display. Same body, just print the the lid and the shorter buttons.