I have a lot of Apple shirts. I mean A LOT of them. But I could always use more and I might of found the next few new ones.
The following shirt was drawn by Garry Booth and captures what made the first Mac work, the insides of course.

exploded128k.com
This next one was drawn by Kevin Tong and lets you take a peek underneath that sexy glass screen of the iPhone. I know, I know its not an iPhone 3g and its the first gen. But to me, this is the phone that started it all. Think of it this way, its the iPhone 128k. This is the device that people will point back to 25 years later and still be wowed.
explodedphone.com
Each shirt you can order respectively at their corresponding webpage.