A pair of trousers, why not? We recommend using a US one dollar bill to fold this model. It also has a matching polo shirt to go with it.
Download the PDF version of these instructions: The-Wrong-Trousers-Origami-Diagram.pdf
Download the DWG version of these instructions: The-Wrong-Trousers-Origami-Diagram.dwg
Download the CTB file for printing the DWG version: OrigamiPlotStyle.ctb