: While not a centrifuge, the Foldscope is a similar paper-based medical tool (microscope) from the same inventor that is available for commercial purchase.
: Circular paper discs (stiff cardstock), string (twine), and small plastic capillary tubes to hold samples. paperfuge buy
If you need a ready-made portable centrifuge and don't want to build one, consider these "frugal" commercial options: : While not a centrifuge, the Foldscope is