Dual Layer Pixel 8 Pro phone case - TPU inner shell and PLA outer shell.
I have been using this model as my only phone case for several months and it has protected me from several minor drops. It does add thickness and weight that could be both double what the naked phone has.
YMMV when it comes to the TPU inner liner but I printed this on a P1P without any issues, but TPU results are as unreliable as wet filament.
Assembly after printing would be insert the TPU shell into the hard shell with the left side first, then once those are together, carefully insert the phone also from the left side first.