Hubby works for Rutgers, I coupon and budget and get free samples to cut back on spending. I use rebates, call companies directly and ask about products. Or I send hand written letters, and generally can get coupons for my efforts. I also stalk a listing site and a freebie site looking for second hand gear that can be sanitized.
i make my own cleaners and sometimes sell hand knitted or crocheted items to supplement income.