USB Hourglass from alwynallan on Vimeo . Over at Make: Online, John Park posted this video of a gadget that generates random numbers by watching sand fall through an hourglass. It watches falling sand in an hourglass with an optical sensor. That data is sent via the Arduino USB output to the PC where it’s analyzed. This entropy is useful for all your random number needs. My favorite part: when the hourglass runs dry a servo motor flips it over and it starts again. USB Hourglass random number generator

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USB Hourglass random number generator

Rear Gear Butt Covers ( “No more Mr. Brown Eye” — not even kidding) are little $5 cardboard cutouts that hang from your pet’s tail and cover its butthole. Jesus Christ. Is your pet feeling left in the dirt because of his/her unsightly rear? I’ve got them covered… Rear Gear is handmade in Portland, OR and offers a cheerful solution to be-rid your favorite pet’s un-manicured back side. Rear Gear comes in many designs including a disco ball, air freshener, heart, flower, biohazard, smiley face, number one ribbon, cupcake, sheriff’s badge, dice, and you can even make yours custom, so there’s a Rear Gear for everyone. Admittedly, I hate an animal’s bare b-hole touching my arm as much as the next guy, but I’m not definitely not hanging a trunk ornament on it. My pet deserves her dignity, damnit. Aaaaand now she’s licking it. NO I DON’T WANT A KISSIE! Hit the jump for a couple more shots and a link to the Etsy sale page.

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I’ve Seen It All Now: Animal B-Hole Covers