Need a scanner? Pro tip: just go to your nearest recycling centre and nab one out of a skip while no-one's looking. It might be a bit scuffed but you can be sure it'll have hardly been used; it'll have sat on a desk, not doing anything much other than taking up valuable space, until someone had a moment of clarity, decided to get rid of it and hasn't looked back since. Make sure you don't get caught by the staff, though.
Alternatively you could kit yourself out with PDFPen Scan+, which does pretty much everything you wanted a scanner for, only on your iPhone or iPad. Granted, it's not that great for the traditional business of scanning photographs and images to then do stuff to them in Photoshop, but then we all know that what we mostly use scanners for is scanning documents and receipts and maybe doing a bit of OCR on them, and that's where Scan+ comes into its own.