Go out? In this economy? We get it, and we’re with you. But the city's vibrant offerings still beckon — and many of them can be experienced for less than an Erewhon Malibu Mango Smoothie.

If you own a 3D printer, these small projects might be worth trying. They solve real problems you run into at home, in the car, or while reading.

The Arduino is a great way for hobbyists and pros alike to experiment with programmable objects, but it can be confusing for ...