Anyone ever tried this?
http://www.art-e-zine.co.uk/imagebond.html
There's links to buy it online in the UK & US. Cheap! Might work on metal?
Or this for artwork? Looks fiddly but might be interesting.
http://www.art-e-zine.co.uk/imageemul.html
Another link:
http://www.art-e-zine.co.uk/imagepaper.html
This pen sounds a bit dodgy, but might work for PCBs (it transfers to copper).
http://www.art-e-zine.co.uk/imageblend.html
And another couple of links for artwork?
http://www.art-e-zine.co.uk/imagewater.html
http://www.art-e-zine.co.uk/imagetattoo.html