I like the iPADD idea!
According to Memory Alpha (a Star Trek wiki) the PADD (Personal Access Display Device) is used for:
logging manifests, compiling duty rosters or diagnostic reports, entering personal data, and/or accessing library computer systems, display schematics, or transmissions and were capable of wireless computer networking as well as playing movies, recording logs and audio playback.
Basically the same things it could be used for now and it's all within our current capabilities.
Of course, as a side effect we could still end up with PADD clutter
