Beyond that, this scene featuring Bea Arther and Korman as a barkeep and her admirer, respectively, also included several extras wearing heavy costumes laden with fur and rubber.

Source: https://gamerant.com/star-wars-holiday-special-horrific-filming-conditions-details/

Those clusters -- which look like clumpy smears of mud -- end up on tree bark, outdoor equipment such as lawn mowers or grills, and have even "survived some very harsh winters," Korman said.

Source: https://www.rawstory.com/experts-say-hamas-and-israel-are-breaking-international-law-but-what-does-that-mean/