For enthusiasts, there is a Newton prototype on eBay. It is transparent and is a MessagePad 110, a rather old model.
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ADB
AirPort
Apple TV
Apple Watch
Bluetooth
Bêta
Clavier
Data Record
DVD
Easter Egg
Ethernet
GPU
iMac
iOS
iOS 4
iPad
iPhone
iPod
iPod touch
iTunes
Karotz
Lightning
Lion
MacBook Air
MacBook Pro
Macintosh
Mac OS
Mac OS X
Manette
Mavericks
Mountain Lion
Nabaztag
Pippin
PowerBook
Power Mac G3
Prototype
Raspberry Pi
Safari
Snow Leopard
Souris
SSD
Thunderbolt
Wi-Fi
Windows
Yosemite