Nanoblock Sanrio Characters Cinnamoroll by KawadaNanoblock Sanrio Characters Cinnamoroll by Kawada. Build your very own Cinnamoroll with Nanoblocks. 160 pieces. Includes detailed building instruction booklet. Nanoblock is the original micro sized building block and is the perfect hobby toy for both older children and grown ups who want to be absorbed in a new construction project. The Nanoblock limited edition Character Pack series is a collection of micro sized building block systems that recreate