When money is short the Amish find extra jobs. They save by buying bulk, sticking to a grocery list, bartering, and scaling back when necessary. They pay bills on time and when borrowing is unavoidable, they make mini payments often and pay all their debts off as quickly as possible, starting with the smallest to the largest.
Instead of shopping, they practice self-control and contentment and invest in relations and experiences together. They remember that life and material goods are transient and that chasing after stuff is meaningless. Whenever they have a little extra money they save it, and they share what they can.
My grandmother taught me these very same principles, emulating simplicity and saying "Waste not, want not." My favorite thrifty trick she taught is to buy much of what's needed second hand, at yard sales and thrift stores. Do you have any favorite tips to help create thrift?