These specials are just Ika-Musume being herself in smaller moments, which means they're pure comfort without needing to earn it. You're not waiting for a joke to land or a plot to justify watching; you're just spending time with a character whose stubborn earnestness in the smallest situations is enough. The show trusts that watching a squid girl fuss over something trivial is the whole point.
Squid Girl Specials is a pair of comedy specials from 2011 made up of side-story episodes under the name "Mini Ika-Musume." As side stories, they stand apart from the main plot of Shinryaku! Ika Musume and offer extra comedic material connected to that series.