I buy whatever I can get free with a coupon. Dollar General and Family Dollar both take manufacturer coupons. Some of the things I've gotten for free or just the cost of tax include: toothpaste, cleaners, tissues, pet food, tp, razors and shampoo.
I keep whatever my family likes or can use and the rest I pass along to a local shelter for abused women.
Other than coupon stuff I like to get plastic storage totes, stationary items and cleaning odds and ends such as scrub buckets and dust pans.