Then I found & bought this on ebay:
It's cheap & convenient which looks like a stapler. Can't believe what I have been waiting for has finally here. I just made payment today and waiting for the item to arrive. Item location is in Hong Kong. Bought it at only GBP 0.99 which is SGD$3.21. As the colour is random, don't know what colour I will get. Anticipating.... Yeah, but I wonder whether I know how to use it.