Cog

Cogs animate once they are set down, which almost no other block does. Fill a solid rectangle and the interior tiles turn like working machinery. The outer edge is inconsistent: single lines, corners and junctions sit dead, and the rest of the border spins or does not depending on a roll the game makes. If you want a wall of moving gears, build it thick and treat the perimeter as something you cannot control.

The Steampunker stocks them without limit, so the cost of a steampunk build is really a question of how many coins you feel like handing over. Gun users have a better reason to keep a stack around than builders do, since this is the ingredient behind High Velocity Bullets. Buy well past what you think you need. Kitting out a full room of the furniture eats far more than a first trip to her shop suggests.