"Beaker is the longtime assistant and involuntary guinea pig of Dr. Bunsen Honeydew and Muppet Labs. While Beaker has been scorched, shredded, and otherwise sacrificed for the sake of science, he remains a dedicated researcher who always comes back for more. After all that, it's no wonder all he says is "Meep!""
Every Muppet has different things that they like. For every unique object that they like that's placed on the stage, the Muppets's happiness will increase by one (in other words, placing two of the same liked item will still only increase happiness by one ).
+ The Divettes 
(in other words, placing two of the same liked item will still only increase happiness by one 
, Fog Machine, Reception Desk, Gorilla Detector
, Fog Machine, Lab, Gorilla Detector
)