Disting

Expert Sleepers makes a popular 4hp multi-function module called the Disting (as in “this thing”). The first two versions had 16 different algorithms or personalities; later versions have dozens of different modes. Distings tend to be a love/hate affair for many users, as its small size means a severely limited user interface and input/output connections. But they are so versatile that I personally think every modular case should have at least one.