Archiving our old 9.0 dB, but still want reporting ability

We re-implemented with 9.2 without importing all data a few years ago. I still have old servers and dB copies, app instances, excel ODBC reports, two ancillary in-house written dBs....on and on.
While understanding that customers still need to access certain data, I need housecleaning and will eventually not be able to support deprecated SQL.
I seek ideas and knowledge on how to go about this. We don't have a large team at this time, so if you know of someone who can help, that info is also appreciated.
~Julie~