If this is for a so call "Club" ....

... how could we request another "Club" or "Society" to sponsor such merchandise, when that society's doesn't even have such t-shirt for it's own members and, another question will go on and on ...

If we want it, we do it ourself. The sponsors wouldn't come in unless they could see some benefits to it. Put it this way, do u guys like to wear sometime with all those sponsors' logo ??? ...