We started shopping estate sales when we bought our house. We've gotten some pretty great deals and I'm pretty sure shopping at estate sales falls squarely into the "thrifty" side of the cheap vs. thrifty spectrum.
Antique sewing table: $7.50
Goodwill. You can get really nice picture frames for $1-3, which would run you upwards of $10-20 new. I also often buy art just for the frames. Even if I don't love the art, it is often priced well below what even the frame is worth, so I buy it and replace the art.
art piece in the house.
We've gotten lots of other things that are not pictured, including some outdoor pots for planting, tools (once Kevin got a saw for $10 that was worth $100s), and household odds and ends. If you have the time, estate sales are definitely worth perusing. You can find estate sales in your area at estatesales.net and a guide to estate sales here. Happy thrifting!