Bobby's comments are on the money, and sound like the most compatible route, bio-polymers very interesting if you have the backgound and know what to do, or can easily find additional reading material.

But perhaps another route would be DIY...come up with something of your own, there was a program on the other day about people experimenting with DNA at home people ordering gene sequences from the internet and doing crazy things at home with minimal equipment, or DNA hackerspace's.

So if you can figure out how to make some interesting bio-polymer sludge that you can turn into filament in quantity(or self organizing layer by layer), or one that sets like concrete when exposed to UV or other spectum light/or electical stimulation, or all at the same time?, the big boys will probably welcome you with open ams.