Interesting and unusual invention

Continues to acquaint readers with simple, witty, and sometimes funny inventions in recent years. This release is dedicated to useful device that can be easily fit into a pocket or even purse:





Multifunction key



Reusable Hand Warmer



Pocket Chain Saw



Multi-tool the size of a credit card



"Ninja" in the wallet



18 useful tools in one card, including a stand for mobile phone, screwdriver and bottle opener.



Folding knife the size of a credit card



Pocket cache