Rin Append Vocaloid from the"Project Diva Extended" PSP.
Kagamine Rin Append Papercraft

SeeU is a voicebank for Vocaloid3 and is the first Vocaloid capable of singing in Korean. It is also bilingual (Japanese and Korean).
Vocaloid SeeU Papercraft

A fresh-looking Snow Miku of Vocaloid by Moekami.
Miku Hatsune Snow (Ginjishi) Papercraft

A chibi-styled papercraft of Vocaloid 2's Megurine Luka created by btt-modeler.
Vocaloid 2 Megurine Luka Papercraft

As Miku Hatsune Vocaloid gained popularity, a demand for a male voiced Vocaloid grew. Hence, Kagamine Rin (female) and Len (male) were introduced.
Vocaloid Kagamine Len Papercraft

Here's a chibi or super deformed papercraft of Gakupo Kamui, an official mascot character of Gackpoid which is a singing synthesizer application software powered by Yamaha's Vocaloid 2.
Vocaloid: Chibi Gakupo Papercraft