Amigas in the attic...

[amigaksi]

I see some mice on ebay or you can go for a trackball:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=170470831373

I have a couple of extra mice as well if you need one and the CX40 Atari type joystick if you want to avoid ebay.  Just pmail me.  I'm assuming you are USA; otherwise you may be better off buying in your country to reduce shipping costs.

I have some Commodore 128 Power Supplies which seem to work although one one pin is labeled 9v instead of 12v.

[amigaksi]

Don't use them with an Amiga, please don't even hint that they could be used with the Amiga.

9VAC is not 12VDC. Perhaps nothing will break, but since the correct PSU is really easy to find, there's no point.

Looks like I got away with it because most of the circuitry on the motherboard uses the 5vdc.

Perhaps, it will have an adverse effect on the audio circuitry and floppy drive in the long run.

Some devices are tolerant though like this Yamaha keyboard I have which takes 9vac, 9vdc, 7.5vdc, etc.

[amigaksi]

That's subject to debate given it's in parentheses and perhaps, he's a nomad, or perhaps UK is University of Kentucky or perhaps, he works in USA and commutes.

[amigaksi]

Regarding batteries leaking, I just removed a couple from the A501 memory expansion and the batteries had leaked.  But the 512K still works-- I guess the leak was isolated from the main circuit parts that make a difference.