Home Depot is running a buy one, get one free special on Milwaukee cordless power tools: When you buy a battery set or a tool you can get another battery or tool for free. Since batteries are often the most expensive part of building a cordless kit, getting a lower price on a battery starter kit can offer significant savings.

Larger appliances like refrigerators and washing machines are also on sale now, with prices down by as much as 30 percent, making Black Friday the perfect time to upgrade your kitchen, beef up that DIY arsenal, or secure a big-ticket item typically out of your price range.