I’ve put compact flash cards through the wash a few times with no ill effect, but I discovered a stem of Senecio pendulus that had made it through the washing machine. This is a succulent species, with jointed stems and no leaves, similar in some ways to Cylindropuntia (but without spines). The joints break off readily, and one apparently fell among my dirty laundry. In any case, it is apparently no worse for wear and I’ve planted it. We’ll see if it survives.