Put your name on it

The plate is shared and permanent, so every brick is signed. Sign in and your brick goes down where you left it, and a 40-piece starter bag pours out.

Nothing you place is ever deleted, and nobody can take a brick from you. A brick you place is yours alone for 24 hours; after that another builder can nudge it — if nothing is stacked on it, and only one brick of someone else's every 15 minutes. It never stops being yours.