LEGO Mindstorms (and indeed regular technic) are a not unusual sight in science laboratories. Unfortunately I’m not lucky enough to need ‘work LEGO’ but I have looked jealously into labs that do. Typically it’s used to automate simple procedures or make quick reconfigurable rigs.
The Kim Laboratory of the University of Washington use LEGO in a novel way: to test fear in rats using the aptly named Robogator. This is certainly the first time I’ve seen LEGO used in neuroscience and I have to admit the idea of testing fear using a bright colourful toy robot is pretty clever and amusing. They have a few videos too.