5 Cool New Hard

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After several months in beta testing, Grand St.--an online market for entrepreneur-made gadgets--opened to the public yesterday. Many of the electronics you'll see on the Grand St. site, originally funded through Kickstarter campaigns, have a limited distribution--so you'll be hard-pressed to come across them elsewhere. While the site features a permanent collection, a few new limited-edition items launch each week.

As Aaron Henshaw, one of the co-founders, told VentureBeat, "A lot of these products don't have a home. Many makers and creators say marketing is a pain point for them. We can take care of a lot of that."

Grand St., which is based in New York, raised $1.3 million in seed funding earlier this year from First Round Capital, Gary Vaynerchuk, and other investors.

Here are five of our favorite items so far:

The Pocket Socket Charger A lightweight (less-than-a-pound) handcrank charger that can power up all your devices in a pinch.

ChargeCard USB Cable If you're not up for handcranking, try the ChargeCard. Similar in size to a credit card, it lets you power devices from any USB port.

The Hone Key Finder A simple keychain add-on that connects to your iPhone or iPad via Bluetooth and will help you find your keys...wherever they are.

Blink Steady Bike Light A basic but smart motion- and light-sensing bike light that was made in Brooklyn.

The Cosmonaut StylusThis pen for digital devices has retro packaging, and, according to the Grand St. team, "it glides, for serious."

Stephanie Meyers is an associate editor at Inc.com. Previously, she worked on features for mental_floss magazine and and books for HarperCollins Publishers. @theRightSteph