Egan Ford has added mobile versions to  the Apple Game Server and Apple Disk Server websites.  These updates make it possible for you to use your iPhone or iPad to stream the extensive catalog of titles directly to your Apple II.  Egan states in his comp.sys.apple2 post that he has only tested on the iPhone, but any HTML5-compatible smart phone should work.
Apple Game Server mobile edition can be accessed here, and the Apple Disk Server can be found here.