Surfing the web i have found an amazing picture of Steve Wozniak (The great WOZ) playing his Apple II like an accordion, enjoy!
To remember the great machine that was the Apple II, there is an application made for your raspberry pi with raspbian here how to install and run it:
LinApple emulates an Apple IIe. To install it, log in and type:
wget -O- ivanx.com/a2cloud/files/linapple-rpi.tgz | sudo tar Pzx
linappleto start it up. If you have any difficulties running it, try:
sudo apt-get -y update
sudo apt-get -y install libsdl1.2debian libcurl3 zlib1g libzip2