2. A Snow Globe with a Frozen Lake
Water changes everything in a snow globe. Here, the centrepiece is a frozen lake, smooth packed ice edged with snow, with a tiny skating rink marked out in the middle. A couple of figures, or just a pair of lanterns, suggest skaters without a single extra block.
I love building this one at night in-game. The ice catches the light, the snow sparkles, and the whole dome looks like it was lit from within. It is calm, clean, and impossibly elegant.