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1. Household Tools

Desktop 3-D printers are gaining in popularity. Costing around $2,000 or less, consumers can print a variety of homemade objects, such as a working wrench. The object was made with an UP! portable 3-D printer.

One hobbyist said he needed a toothbrush holder and a light switch. So he printed them.

Heesun Wee | CNBC