My experience with 3D printing so far

About a week ago, I bought my first 3D printer. The widely known Ender 3. After I built it, I tried a few test prints. First I tried the Calibration Cube.

I accidentally printed a Benchy with a Calibration cube in it. I call it the Cubenchy

After I figured out how to correctly level the bed, I could start making bigger prints. My first large print was this Raspberry Pi case. It took 7h for one part.

source for the model: https://www.thingiverse.com/thing:2623833

What should I print next? Let me know