4. Lamp Bases
Keep a sharp eye out for lamp bases in your basement or during garage sales. Some of them could be worth the same as a car. "One time, someone came into the roadshow with the base for a Tiffany's lamp that they had bought at a thrift shop for $5," Eric Silver, an appraiser for Antiques Roadshow, told Elle Decor. "It was only the base, but it was worth $25,000." It's the dream.