Amen to avoiding team travel sports
Cut cable no landline
Shop smarter on groceries
Stop eating out
Drive less
Move to LOCL--not only your house but literally every service and cost will be lower by A LOT
public school, obviously
buy a few things high quality that will last decades (le creuset, barbour jackets, LL bean or Sorel winter boots come to mind)
Always always always pay yourself first nd live on what is left over
don't leave things like FSA, DCA on the table