multiplex culture tube lid

Featured on the teklalabs print my lab contest winners. Sterilize with ethanol before use. I'm told that you can print autoclavable parts with nylon but have not tried.
http://www.teklalabs.org/print-my-lab-results/
Description: Experimental protocols can require sampling from 12 to 36 tubes at short intervals. Unfortunately, the standard tube lids friction fit on and the entire tube must be removed, uncapped and replaced. Furthermore all 36 caps must be set down in a sterile place and without mixing caps between tubes to prevent cross‐tube contamination. The time it takes to do this is unacceptable in some cell culture experiments.
By linking 6 caps together that are just loose enough to be removed without too much force, an entire row of caps can be removed in one motion! This reduces sampling time from minutes to seconds, and helps to prevent cross-contamination, simplifying collection of data that is otherwise too difficult to obtain.