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Navigating the world of crowdfunding can be overwhelming, to put it lightly. Which projects are worth backing? Where's the filter to weed out the hundreds of useless smart devices? To make the process less frustrating, we scour the various online crowdfunding platforms to put together a weekly roundup of our favorite campaigns for your viewing (and spending!) pleasure. Go ahead, free your disposable income:

An armrest that's as easy on the eyes as it is functional, Mouzen clips onto the edge of any desk and features a patented mechanism that moves freely in all directions.

Bulgarian architects Mihail Klenov and Martin Angelov hit Kickstarter again with their latest, Halfbike 3. In response to feedback on previous models, this one adds a drum brake to the front wheel for better stopping power and a Sturmey Archer four-speed hub transmission.

The latest inflatable tent concept comes from TentTube, featuring a patented, lightweight AirFrame structure that forgoes the traditional tent poles for much easier set-up.

Created with designers in mind, the 30° Ruler is easy to pick up, won't slide around, and features large font and clear markings in both Metric and US Standard system.

Definitely one of the more unusual Kickstarter campaigns we've seen so far, Hi Algae is a series of desktop organizers—to hold your phone, pens, and business cards—made entirely out of algae.

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