Handy vac for kids

Since i wanted to give the noisy fans of my printer a second chance, i decided to create a small handy vac for my little son.

So now the fan does, what it was created for... NOISE ;-)

Of course, the handy vac, doesn't have a vacuum to clean the floor or sth. else... ;-)

What you need:

1x Mainboard fan or any other fan in 40x40x10 for 12V
2x 9v battery
2x 9v battery plug (wire them parallel to each other)
1x switch (special function: the handy vac is completely round, so if it will