Part of our work is designing custom solutions for systems neuroscience experiments. Often they do not fit our criteria for becoming a product. And yet they can potentially be useful to a significant number of labs. So we do the extra work necessary to share them as Open Hardware. In addition to the ready-to-manufacture files, we share editable design files, manufacturing tips, context for the design idea, and how the design is being used in the lab. Distributed under the CERN OHL-S licence.