Thickened Toyota/Lexus 3 Button Remote Key Case/Shell by polysquare
This is a remix of https://www.thingiverse.com/thing:1764517. The space for transponder was thickened by 1 mm to a value of 9.95 mm. The slot for the key blade was thickened by 1 mm to a value of 4.0 mm.
www.thingiverse.com
Printed this for my LX470. Very solid, case bolted with 4 screws, one screw for the blade. Slightly bigger than original FOB size. Since the transponder space and slot for key blade were thickened by 1 mm, I used hotel room key to fill up those spaces. I would try Toyota/Lexus 3 Button Remote Key Case/Shell by petropixel - https://www.thingiverse.com/thing:1764517 if I need to have another one printed.