An effector for the DexArm to pick up one of these cheap (10-20€ on AliExpress/Amazon/Ebay) but great Chinese USB microscopes. Due to the fine control and steadiness of the DexArm it's like a charm to examine things with the microscope. Everyone owning such a microscope might know how hard it is to focus it on the right spot by hand or with the really wonky stand that comes with the microscope.