For CD-ROMs use Astarte CD Copy to make Toast compatible images and upload them to some place. Having original installer discs is always good.
For HD drives, if they're not too big and for the case when there might be some authorizations on them (invisible or in the boot sectors), use FWB Hard Disk Toolkit 'Device copy' function to image them. All other methods won't preserve the authorizations!
As to the authorization floppies - I wouldn't sweat about it. v4.2 has already been liberated and for v4.1.1 there's snap**** method, which should work for versions 4.0.1 - 4.1.2 too. Better sell them to collectors!