There's lots of neat PCMCIA toys out there that unfortunately were post-16 bit era; IIRC there's a PCI slot box that connects via PCMCIA (although it's prohibitively expensive!), there's a trident based video card, and I do recall having seen a '286 based on a PCMCIA card with it's own RAM (2mb) and I/O!
Sadly without some kind of brain surgery none of these cool toys would ever work on any amiga, ever.