What things did Sparta do to humiliate Athens after their surrender

After Sparta defeated Athens, they set up a new government ruled by the "Thirty Tyrants". This only lasted for one year, as the local Athenians overthrew the tyrants and restored democracy. After the battles, the Spartan general Brasidas raised an army of allies and helots and marched the length of Greece to the Athenian colony of Amphipolis in Thrace, which controlled several nearby silver mines and their product supplied much of the Athenian war fund.