KW-triO has a wide range of staplers meeting even some of your more unusual requirements. 

Practicality has resulted in our invention of the heavy duty staplers (40 sheet stacks), as well as staplers with holding capacity of up to 100 staples. A few of our models can also be used as tackers. Other excellent features include: temporary/easy remove staples, flattened staples, and even staplers not requiring staples.