What turns tinkerers on? Hey now, get your mind out of the gutter—the answer to that question is switches of all kinds. These soft cotton t-shirts feature a diverse array of funky and functional switches that light up all sorts of tinkering projects.

Oakland-based artist Iris Gottlieb hand-drew these switches and every item in the Tinkering Studio as an Exploratorium Tinkerer-in-Residence in 2014.

The Tinkering Turn-Ons t-shirt is available in sizes XS-XXL