Furniture? Washer // dryer? New truck just for the heck of it? Don't do it, friend.
Unless you're paying in 100% cash, avoid making any purchases over $500 before closing.
Did you know?! Your lender can pull your debt-to-income ratio up to 2 MONTHS after closing. If credit spending is significantly higher than what's normal for you, expect an unfavorable adjustment to your loan.