I have to admit, I seldom use my iPad for any kind of music recording or production. Connectivity whilst maintaining portability is problem, twinned with the limited apps available that enable a musician to do anything other than the bare minimum.
Whilst I can’t really do anything about the latter (I’d love to see a version of Logic Pro in iOS), there are certainly things that can be done about the former. I was looking at ways of connecting a MIDI keyboard to the iPad with minimum fuss. I was also looking for something that was pretty cheap.