We're not quite sure how the Leaf mouse works... but know a device that's powered off its own kinetic energy sounds much more economical than one which needs its batteries changing every week!

The design looks really slick and ergonomical too, ideal if you depend on a mouse everyday and can't stand fooling around with the trackpad.

Like most of the amazing ideas on Yanko Design, the Leaf is just a concept now. But watch this space, any product which uses alternative forms of energy is bound to be a big hit over the next year.

[Via Yanko Design]

We love this speaker from Kitsound, which lets you play tunes from a round little koala bear's tummy!

It's basically a dock too, so push your iPhone into the top to play and charge, or use the speaker's 3.5mm aux socket to hook it up to other MP3 players. When you switch it on the little creature's nose will light up and you can swipe his touch sensitive ears to adjust the volume too.

The sound quality probably won't be the best out there, but it's cute for kids or as a fun addition to the office.

You can only get your hands on one of the koala speakers from UK stockists at the moment for £53.99, but expect them to be more widely available in the next few months.

We saw all kinds of weird and wonderful gadgets at CES this year, but it's a shame we didn't get the chance to try out this very cool and very clever Smart Window from Samsung.

It's a window, a computer, a blind, the list really could go on and on...

[Via Like Cool]

This crazy looking gold stuff isn't a Christmas decoration or a really tacky accessory for your home, but it's a pocket sized portable shelter. Weird, huh?

The Basic House is made from a clever metalized polyester material, which can be folded down into a tiny package or unfolded and inflated by the owner's own body heat to create a temporary shelter.

It may seem like a crazy concept for now, but we imagine it'd be useful during emergencies or in extreme weather conditions, as it uses body heat to keep those inside the right temperature.

[Via Like Cool]

We've seen pens that record the written word into their internal memories and allow you to send it onto different devices, like the devices from Livescribe and this clever (and slick) recorder pen from last month.

But now you can record the writing, diagrams and crazy scribbles that you've drawn all over that whiteboard too. The Erascan looks a bit like a regular eraser, but as you wipe away your doodles it saves them for you into a built-in memory chip. You can then send all of the data wirelessly to an email address of your choice.

This handmade video mixer for the iPhone 4/4S, created by Honest & Smile, allows you to record two sided videos. You simply slide the device in, adjust the mirrors and angles slightly and start shooting your video. What a great idea!

We're not really sure why it's called 'The Love Box', but presume it's so you can capture both sides of a loving couple's conversation?! However it's designed to be used we think it's pretty cool, and would be great for getting a quick video of an informal interview or remembering a fun meal with a friend.

Check out a video of The Love Box in action.

Available from thelovebox.com for $90.

This handmade video mixer for the iPhone 4/4S, created by Honest & Smile, allows you to record two sided videos. You simply slide the device in, adjust the mirrors and angles slightly and start shooting your video. What a great idea!

We're not really sure why it's called 'The Love Box', but presume it's so you can capture both sides of a loving couple's conversation?! However it's designed to be used we think it's pretty cool, and would be great for getting a quick video of an informal interview or remembering a fun meal with a friend.

Check out a video of The Love Box in action.

Available from thelovebox.com for $90.

This handmade video mixer for the iPhone 4/4S, created by Honest & Smile, allows you to record two sided videos. You simply slide the device in, adjust the mirrors and angles slightly and start shooting your video. What a great idea!

We're not really sure why it's called 'The Love Box', but presume it's so you can capture both sides of a loving couple's conversation?! However it's designed to be used we think it's pretty cool, and would be great for getting a quick video of an informal interview or remembering a fun meal with a friend.

Check out a video of The Love Box in action.

Available from thelovebox.com for $90.