- At the party Konata gives Tsukasa an outfit that resembles the one's worn in To Heart and even exclaim's "To Heart".
- Konata mentions she is late because a girl who stole Taiyaki bumped into her on the way to school and dragged her off. This is a reference to
Ayu Tsukimiya from
Kanon, which of course was a Kyoto Animation Project with Key.
- The Armband Given to Tsukasa resembles the one worn by Suzumiya Haruhi in the popular anime.
- Konata mentions
Comiket, which is the premier event for Manga and Doujin writers to hawk their wears to the public and generate publicity and awareness of their projects. It's essentially the E3 of Manga.
- Part of the segment leading up to eyecatch appears to lampoon Japan's troubles with crimes of sexual deviancy that have been coming to the forefront of Japanese culture in recent years.
- Konata makes light of the recent lolicon trend in Japan and how the flat chest has become to be seen as status symbol. This appears to refer specifically to a quote by the character
Maiyumi Thyme from Shuffle! who frequently justifies her sexual appeal with the words "A flat chest is a symbol, it has immeasurable value."
- The character Maiyumi Thyme also appears in a poster on Konata's wall, further establishing her apparent high regard for the character from the earlier scene.
- The set on which Konata appears during her imagined interview bears a remarkable resemblance to the
flashy set of the American Gameshow
Who Wants To Be A Millionaire.
- Konata is reading a volume of
Blade of The Immortal in one scene.
- In one scene Konata watches the
infamous episode of Haruhi where Nagato is sitting reading a book for 3 minutes straight and nothing is happening. This episode was seen as a budget savour by many and came under some harsh criticism. Konata notes the flame war on
2channel, which is seen as the largest Otaku community in the world, and is noted for its users ability to generate a large number of posts in a very short amount of time over the simplest of subjects that often decay rapidly into flame wars.
- One of Konata's books has the
Kame School of Martial Arts Symbol on it from Dragon Ball.
- Konata mentions CompMatsuri which appears to be a summer festival for the
Comptiq magazine. However I can find no information on its actual existence in real life (tentative).
- Konata uses a quote by
Captain Juzo Okita from
Space Battleship Yamato reffering to everything feeling nostalgic.
- Kagami has a
Bonta-Kun doll in her room from Full Metal Panic: Fumoffu.
- Konata has a fan with the character
柊 瀬芦里 from Ane Chanto Shiyou Yo on it. I would provide a link about the game proper, but I can't find one that doesn't link through to H content.