Michelle Khine is a biomedical engineering at UC Irvine, but in some ways she is still on the playground... teaching microfluidics with the help of children's toys.
Professor Khine likes to have fun, and from the Technology Review video posted here, it seems like her favorite toy might be Shrinky Dinks. She demonstrates her method for creating microfluidic channels and devices by using the Shrinky Dinks materials and an ink-jet printer.
The related Lab on a Chip article, "Shrinky- dink microfluidics: rapid generation of deep and rounded patterns," goes into more detail about the process and procedures involved.
Professor Khine is also founder of Shrink Nanotechnologies, a company that looks to take advantage of the flexibility and shrinkability of materials like shrinky dinks to create advances diagnostic tools.