I tried these Butterflies with lot other materials than you will come across in your office.
1. Halloween Butterfly made from a used envelop and a black marker.
2. Newspaper. You will find it in your office reception.
3. This is made from a fruit drink can. Though its not considered as an office supply, you can easily find them in your office cafeteria.
4. A4 sheet.
5. An old report.
7. I am making one with an old plastic folder. They are longlasting.