Only buy the bare necessities you need to get by on.

Put off big ticket purchases

Buy from locals when you can

Cut off all unnecessary subscriptions

Stop using Big brand services

Turn in cell phones (does every person in your family really need a cell phone? NO

Remove all payment information from Amazon, fill your shopping carts full but don't proceed through checkout. This will fuck up their inventory.

Stop eating out.

Be lean and frugal for a while, big business will take notice.