Cels of Meimi in kaitou outfit, superdeformed or in funny situations. I'm also willing to pay good money for cels from any of Meimi's transformation sequences, from episode 9 (in a wedding gown), from episode 26 (in a formal gown), or from episode 43 (Meimi as a grown up)
Cels of Seira (either in school uniform, in sister habit). I'm also willing to pay good money for cels from episode 9 (dressed in a wedding gown or as Saint Seira) or from episode 19 (in a snowman outfit)
Cels of Maju either in fortune-telling outfit, superdeformed or in "sneaky" outfit (trench coat and sunglasses)
Cels of Meimi's pet hedgehog, Ruby
Any cel from the Saint Tail anime (preferably with a matching background drawing)
Cels of Idol Project's Corvette
Cels of Idol Project's Mimu in "Cosmos Patrol Mimi" outfit
Cels of Idol Project's Shion
Cels of Idol Project's Parupu
Decently-priced (if such things exist ^^;;) cels from Cyber Team in Akihabara
Cels of Vampire Princess Miyu's Miyu
Cels of Vampire Princess Miyu's Reiha
Decently-priced cels from Card Captor Sakura
Cels of Mahou Tsukai Tai!'s Akane
Decently-priced cels from Mahou Tsukai Tai!
Cels of Saber Marionette J's Cherry
Cels of Lost Universe's Canal
Cels of Kodomo no Omocha's Sana
Cels of YAT Anshin's Katsura
Cels of Fushigi Yuugi's Miaka either from the TV series or OVA
Cels of Magic Knight Rayearth's Fuu either from the TV series or OVA
Decently-priced cels from Bishoujo Senshi Sailor Moon