VB ASP Chat Box needs small emoji selection

I have a goofy small chat in VB and ASP and would like users to be able to select emoji. Maybe some way of just entering this in the text box :) = (a smile face) or entering this :( = ( a sad face ). This is just a play chat for me and a few friends. This not a production chat and don't have a lot of money. Would like this done now! You would think there is a simple solution rather than a emoji picker script. Your ideas are welcome