On my A1200: Logitech optical USB mouse with a DB9-USB adapter from ebay and both a Quickshot Joystick and a Competitor PRO CD32 Pad switchable with a Robo Mach2 device.
On my A2000: Alfa Data trackball as a mouse and no joystick or pad at the moment.
On my A500 Plus: my old 3d party Primax mouse bought as a replacement of the tank mouse in 1995 and another model of Competitor Pad or an Amiga Hyperpad.
My other miggies are not hooked at the moment.