I think all of these plushies can be described. Added Keropii from Kanon. I've seen some Alice in Wonderland-related series with that white rabbit. Not sure about the others.
Masuda Jigorou (saku saku)KeropiiShirai Vincent (saku saku)Domo-kunOryzae-tanMoominpappaBonus kunYoshiKyoro-chanNoppon (the mascot of Tokyo tower)HeberekePomupomu (GUNBIRD; an attendant of Marion)King SlimeOyajiWeighted Companion CubeDocomo-dake (NTT docomo)PinguMameshibaBuster-kun