Digital BW, The Print

If my memory is correct, InkAid has a substance that can be applied 
to metal to make it receive inkjet inks. I've never had the 
chance/need to use it yet, so don't know if it works, or how well it 
works. You can get small sample sized bottles from Inkjetart. They 
also claim to have a clear coating that can be applied to things like 
Lexan sheets that might make some interesting prints.