The JISC Elevator scheme closed on March 30 and there are some excellent ideas well worth a look. The 'winners' will be chosen by the end of April http://elevator.jisc.ac.uk/
My iPad project has also won some funding from my own institution's E-learning Projects together with four others.
I'm marking an up-coming assessment over the Easter break using both audio feedback and pdf annotated feedback. This is also part of a large-scale JISC funded project we have running here in collaboration with the University of Winchester called FASTECH which is specifically about using currently available technologies to support and enhance assessment and feedback. There is some information here on the JISC site but our own website will go live quite soon. I'll report here on how it goes!