Poor Man's BioPrinter
The basic structure for bio printing ink can be made from roux. Roux is a substance created by cooking wheat flour and fat, the thickening agent of sauces (see http://en.wikipedia.org/wiki/Roux ). Make the roux very smooth by pounding it. Then mix in the bio cells. And print it as you would for normal T-shirt screen printing through a thin, structured sieve (see http://en.wikipedia.org/wiki/Screen_printing ). You can print on an agar plate. Just make sure that the agar is not too wet and that the screen printing sieve lies flat on the agar.