In addition to the Parciero, there are a number of newer/new-ish things that plug into the 68000 socket and add a few megs of RAM and an IDE port or a CF slot. You'd have to confirm A1000 compatibility because I think they're intended for the A500/A2000, but the 68000 components of all three systems are so similar it would probably work.
Downside: you need Kickstart 2 or 3, or you need to hack together a 1.3 ROM that includes scsi.device.
This should help. Hopefully the resulting ROM can be converted to a Kickstart disk.
