Small box, smooth fit - a Tinkercad exercise

At 100% size this is only 2 x 2 x 2,7 cm with a perfect fit of the lid. It prints with a .6 nozzle at 0.2 layer height in only 27 minutes. No support needed and 10% triangle infill.

I was looking for boxes to use for Geocaching when I decided that the best box is my own design to fit in the exact spot where I need it.
That means learning how to create boxes.
This one is quite small which allows for fast printing and prototyping, also it is a good exercise in working with tight fits and cle