Step 1: Things You Need
1. Your cube
2. Whatever you need to hide
Step 2: Open Your Cube
It is very easy, just turn a side 45 degrees and twist a edge. IT may look difficult at first but it is easy. Be careful! you may break a torpedo!
Step 3: Pull Apart the Edge
This step is somewhat tricky. To pull the edge into two you should pull it from both sides. Or you may use any other object to open it.
Step 4: Keep Your Stuff
Now all you have to do is keep whatever you may like for example SD Card, any note or any precious stone or small diamonds. I have kept foam balls for demonstration. You may keep any thing you like, but remember it "MUST BE SMALL".
Step 5: Close the Edge
Now just close the edge and put it back in the cube, you may need to again turn the side 45 degrees and then twist it back in place.
Step 6: Done!
Now its done. Now take the cube with you wherever you want and have no worries of your small things. You may also use it as a holder for you small stuff which keeps getting lost. Enjoy!!