Accessories: I have a combining lenses, pin tables [homebuilt], honeycomb tables , wireless remote, Modifed Ultimate Air Assist, home built non-powered rotary device, PrusaMK4 and Mini Prusa printers.
I get a newsletter from All3Dp.com because they sometimes have useful articles [mostly 3d printing] and this one seems like something that might interest some of you 'build your own' people.