You have some mad skilz!
I just really want to know if this is actually to scale? Did you actually research all the specifications (not just for this but for the mp3player/car/&helicopter?)
The greatest challenge I have when using Inventor is not making things, but making things that are actual representations of parts that can be purchased online.
If I had one wish it would be that McMaster Carr would document their parts with CAD
This will be 10x more amazing if you tell me that its actually to scale!
If not its still awesome.
Nice work.