3D-print against proprietary solutions
We share the restrooms in our hackspace with other tenants on the same floor. Once a week the cleaning staff does their thing (except refilling the soap, but that’s another story), including refilling the paper towel dispensers. Recently the paper towels started to show up in their packaging on the sink. That led to a lot of waste: towels being strewn around, on the floor, in the sink (clogging the drain) and so on.